{
 "name": "USPS retail package prices, 8 oz to 5 lb, since 2010",
 "description": "USPS retail prices for an 8 oz package (First-Class Mail parcels, then First-Class Package Service—Retail, now USPS Ground Advantage—Retail), a 15.999 oz Ground Advantage package and 1 lb and 5 lb Priority Mail packages to Zone 4, one row per price period since Jan 4, 2010. Temporary holiday and time-limited prices are marked. From USPS Notice 123 price lists, each row cross-checked against another USPS edition or price file.",
 "unit": "USD per package at USPS retail prices; Zone 4 wherever the price depends on distance",
 "zone": 4,
 "cells": [
  {
   "key": "first_class_8oz",
   "label": "8 oz package",
   "csv_column": "price_8oz_usd",
   "detail": "Retail price for a package up to 8 oz: First-Class Mail parcels until Sep 2, 2017, First-Class Package Service—Retail until Jul 8, 2023, and USPS Ground Advantage—Retail since Jul 9, 2023. One price for any distance until Jan 26, 2019; Zone 4 since Jan 27, 2019 (see zone_8oz)."
  },
  {
   "key": "ground_advantage_15_999oz",
   "label": "15.999 oz Ground Advantage",
   "csv_column": "price_ground_advantage_15_999oz_usd",
   "available_from": "2023-07-09",
   "detail": "USPS Ground Advantage—Retail, up to 15.999 oz, Zone 4. Empty before Jul 9, 2023: the retail First-Class parcel and First-Class Package Service—Retail tables stop at 13 oz."
  },
  {
   "key": "priority_1lb",
   "label": "Priority Mail 1 lb",
   "csv_column": "price_priority_1lb_usd",
   "detail": "Priority Mail retail, up to 1 lb, Zone 4."
  },
  {
   "key": "priority_5lb",
   "label": "Priority Mail 5 lb",
   "csv_column": "price_priority_5lb_usd",
   "detail": "Priority Mail retail, up to 5 lb, Zone 4."
  }
 ],
 "verified_on": "2026-10-14",
 "method": "Each row starts on the effective date printed on the first Notice 123 that shows its prices (not the date of the DMM archive edition that carries it) and ends the day before the next price took effect. The USPS announcements end temporary prices at 12 a.m. (midnight) Central Time on the date they give, so a temporary row ends the day before that date, or the day before another temporary price is added on top of it. Prices are read from the retail tables: First-Class Mail single-piece parcels, First-Class Package Service—Retail, USPS Ground Advantage—Retail and Priority Mail Retail. Every price is cross-checked against at least one other USPS document (see cross_check_match). From 2017, every row is matched against USPS price files; earlier rows against other Notice 123 editions.",
 "cross_check_match": {
  "same-period": "A USPS copy of a price list in effect during the row's period: another Notice 123 edition, the archive's HTML copy or a USPS price file.",
  "other-period": "The archive has no second copy of the row's own price list, so this is an earlier or later USPS price list showing the same price for the listed cells. It confirms the price, not the dates."
 },
 "zone_pricing_source": {
  "url": "https://about.usps.com/postal-bulletin/2011/pb22326/pdf/pb22326.pdf",
  "title": "USPS Postal Bulletin 22326 (Dec 15, 2011): Priority Mail retail prices are based on distance (zone) and weight"
 },
 "price_files_from": "2017-01-22",
 "archive_url": "https://pe.usps.com/Archive/DMM",
 "price_file_archive_url": "https://pe.usps.com/Archive/PriceFile",
 "price_change_url": "https://pe.usps.com/PriceChange/Index",
 "license": "https://creativecommons.org/licenses/by/4.0/",
 "rows": [
  {
   "effective_from": "2010-01-04",
   "effective_to": "2011-01-01",
   "prices": {
    "first_class_8oz": 2.41,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 5.05,
    "priority_5lb": 9.85
   },
   "product_8oz": "First-Class Mail retail parcels",
   "zone_8oz": null,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20100104/Notice123.pdf",
   "source_edition": "2010-01-04",
   "source_notice_effective": "2010-01-04",
   "source_title": "USPS Notice 123, effective Jan 4, 2010 (Postal Explorer DMM archive, Jan 4, 2010 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20100607/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2010-06-07",
     "notice_effective": "2010-03-14",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ],
   "previous_price_source": {
    "url": "https://pe.usps.com/Archive/PDF/DMMArchive20090511/Notice123.pdf",
    "note": "The Notice 123 effective May 11, 2009 shows the same 8 oz First-Class Mail parcel price ($2.41) and lower Priority Mail prices ($4.95 for 1 lb and $9.45 for 5 lb, Zone 4), so the first row starts on Jan 4, 2010, the effective date printed on the next price list."
   }
  },
  {
   "effective_from": "2011-01-02",
   "effective_to": "2011-04-16",
   "prices": {
    "first_class_8oz": 2.41,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 5.25,
    "priority_5lb": 10.25
   },
   "product_8oz": "First-Class Mail retail parcels",
   "zone_8oz": null,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20110102/Notice123.pdf",
   "source_edition": "2011-01-02",
   "source_notice_effective": "2011-01-02",
   "source_title": "USPS Notice 123, effective Jan 2, 2011 (Postal Explorer DMM archive, Jan 2, 2011 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20100607/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2010-06-07",
     "notice_effective": "2010-03-14",
     "cells": [
      "first_class_8oz"
     ],
     "match": "other-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20110417/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2011-04-17",
     "notice_effective": "2011-04-17",
     "cells": [
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "other-period"
    }
   ]
  },
  {
   "effective_from": "2011-04-17",
   "effective_to": "2012-01-21",
   "prices": {
    "first_class_8oz": 2.56,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 5.25,
    "priority_5lb": 10.25
   },
   "product_8oz": "First-Class Mail retail parcels",
   "zone_8oz": null,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20110417/Notice123.pdf",
   "source_edition": "2011-04-17",
   "source_notice_effective": "2011-04-17",
   "source_title": "USPS Notice 123, effective Apr 17, 2011 (Postal Explorer DMM archive, Apr 17, 2011 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20111107/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2011-11-07",
     "notice_effective": "2011-06-06",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2013-01-27",
   "effective_to": "2014-01-25",
   "prices": {
    "first_class_8oz": 2.92,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 5.85,
    "priority_5lb": 11.5
   },
   "product_8oz": "First-Class Mail retail parcels",
   "zone_8oz": null,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20130127/Notice123.pdf",
   "source_edition": "2013-01-27",
   "source_notice_effective": "2013-01-27",
   "source_title": "USPS Notice 123, effective Jan 27, 2013 (Postal Explorer DMM archive, Jan 27, 2013 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20130728/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2013-07-28",
     "notice_effective": "2013-07-28",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2014-01-26",
   "effective_to": "2014-09-06",
   "prices": {
    "first_class_8oz": 3.22,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 5.85,
    "priority_5lb": 11.35
   },
   "product_8oz": "First-Class Mail retail parcels",
   "zone_8oz": null,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20140505/Notice123.pdf",
   "source_edition": "2014-05-05",
   "source_notice_effective": "2014-01-26",
   "source_title": "USPS Notice 123, effective Jan 26, 2014 (Postal Explorer DMM archive, May 5, 2014 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20140728/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2014-07-28",
     "notice_effective": "2014-01-26",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2014-09-07",
   "effective_to": "2015-05-30",
   "prices": {
    "first_class_8oz": 3.22,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 6,
    "priority_5lb": 11.3
   },
   "product_8oz": "First-Class Mail retail parcels",
   "zone_8oz": null,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20150125/Notice123.pdf",
   "source_edition": "2015-01-25",
   "source_notice_effective": "2014-09-07",
   "source_title": "USPS Notice 123, effective Sep 7, 2014 (Postal Explorer DMM archive, Jan 25, 2015 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20140505/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2014-05-05",
     "notice_effective": "2014-01-26",
     "cells": [
      "first_class_8oz"
     ],
     "match": "other-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20150531/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2015-05-31",
     "notice_effective": "2015-05-31",
     "cells": [
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "other-period"
    }
   ]
  },
  {
   "effective_from": "2015-05-31",
   "effective_to": "2016-01-16",
   "prices": {
    "first_class_8oz": 3.54,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 6,
    "priority_5lb": 11.3
   },
   "product_8oz": "First-Class Mail retail parcels",
   "zone_8oz": null,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20150531/Notice123.pdf",
   "source_edition": "2015-05-31",
   "source_notice_effective": "2015-05-31",
   "source_title": "USPS Notice 123, effective May 31, 2015 (Postal Explorer DMM archive, May 31, 2015 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20160117/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2016-01-17",
     "notice_effective": "2016-01-17",
     "cells": [
      "first_class_8oz"
     ],
     "match": "other-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20150125/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2015-01-25",
     "notice_effective": "2014-09-07",
     "cells": [
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "other-period"
    }
   ]
  },
  {
   "effective_from": "2016-01-17",
   "effective_to": "2016-04-09",
   "prices": {
    "first_class_8oz": 3.54,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 6.85,
    "priority_5lb": 12.45
   },
   "product_8oz": "First-Class Mail retail parcels",
   "zone_8oz": null,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20160117/Notice123.pdf",
   "source_edition": "2016-01-17",
   "source_notice_effective": "2016-01-17",
   "source_title": "USPS Notice 123, effective Jan 17, 2016 (Postal Explorer DMM archive, Jan 17, 2016 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20150531/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2015-05-31",
     "notice_effective": "2015-05-31",
     "cells": [
      "first_class_8oz"
     ],
     "match": "other-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20160606/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2016-06-06",
     "notice_effective": "2016-04-10",
     "cells": [
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "other-period"
    }
   ]
  },
  {
   "effective_from": "2016-04-10",
   "effective_to": "2017-01-21",
   "prices": {
    "first_class_8oz": 3.4,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 6.85,
    "priority_5lb": 12.45
   },
   "product_8oz": "First-Class Mail retail parcels",
   "zone_8oz": null,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20160606/Notice123.pdf",
   "source_edition": "2016-06-06",
   "source_notice_effective": "2016-04-10",
   "source_title": "USPS Notice 123, effective Apr 10, 2016 (Postal Explorer DMM archive, Jun 6, 2016 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20161107/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2016-11-07",
     "notice_effective": "2016-08-28",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2017-01-22",
   "effective_to": "2017-09-02",
   "prices": {
    "first_class_8oz": 3.39,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 7.25,
    "priority_5lb": 11.95
   },
   "product_8oz": "First-Class Mail retail parcels",
   "zone_8oz": null,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20170807/Notice123.pdf",
   "source_edition": "2017-08-07",
   "source_notice_effective": "2017-01-22",
   "source_title": "USPS Notice 123, effective Jan 22, 2017 (Postal Explorer DMM archive, Aug 7, 2017 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20170122/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2017-01-22",
     "notice_effective": "2017-01-22",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2017-09-03",
   "effective_to": "2018-01-20",
   "prices": {
    "first_class_8oz": 3.64,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 7.25,
    "priority_5lb": 11.95
   },
   "product_8oz": "First-Class Package Service—Retail",
   "zone_8oz": null,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20171106/Notice123.pdf",
   "source_edition": "2017-11-06",
   "source_notice_effective": "2017-09-03",
   "source_title": "USPS Notice 123, effective Sep 3, 2017 (Postal Explorer DMM archive, Nov 6, 2017 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/EXCEL/PriceFile_Archive_20170903/Price%20Files.xlsx",
     "type": "USPS price file (Excel, FCPS RTL sheet)",
     "edition": "2017-09-03",
     "notice_effective": "2017-09-03",
     "cells": [
      "first_class_8oz"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20170122/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2017-01-22",
     "notice_effective": "2017-01-22",
     "cells": [
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "other-period"
    }
   ],
   "note": "First price list to name the 8 oz retail product First-Class Package Service—Retail (the Jan 22, 2017 list shows First-Class Mail parcels)."
  },
  {
   "effective_from": "2018-01-21",
   "effective_to": "2019-01-26",
   "prices": {
    "first_class_8oz": 3.75,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 7.3,
    "priority_5lb": 11.95
   },
   "product_8oz": "First-Class Package Service—Retail",
   "zone_8oz": null,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20181105/Notice123.pdf",
   "source_edition": "2018-11-05",
   "source_notice_effective": "2018-01-21",
   "source_title": "USPS Notice 123, effective Jan 21, 2018 (Postal Explorer DMM archive, Nov 5, 2018 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20180121/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2018-01-21",
     "notice_effective": "2018-01-21",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2019-01-27",
   "effective_to": "2020-01-25",
   "prices": {
    "first_class_8oz": 4.49,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 7.85,
    "priority_5lb": 11.6
   },
   "product_8oz": "First-Class Package Service—Retail",
   "zone_8oz": 4,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20190304/Notice123.pdf",
   "source_edition": "2019-03-04",
   "source_notice_effective": "2019-01-27",
   "source_title": "USPS Notice 123, effective Jan 27, 2019 (Postal Explorer DMM archive, Mar 4, 2019 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20190127/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2019-01-27",
     "notice_effective": "2019-01-27",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20190623/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2019-06-23",
     "notice_effective": "2019-06-23",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20190623/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2019-06-23",
     "notice_effective": "2019-06-23",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20191007/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2019-10-07",
     "notice_effective": "2019-06-23",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ],
   "note": "First-Class Package Service—Retail is priced by zone from this price list on; earlier rows show one price for any distance."
  },
  {
   "effective_from": "2020-01-26",
   "effective_to": "2021-01-23",
   "prices": {
    "first_class_8oz": 4.7,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 8,
    "priority_5lb": 12.25
   },
   "product_8oz": "First-Class Package Service—Retail",
   "zone_8oz": 4,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20200126/Notice123.pdf",
   "source_edition": "2020-01-26",
   "source_notice_effective": "2020-01-26",
   "source_title": "USPS Notice 123, effective Jan 26, 2020 (Postal Explorer DMM archive, Jan 26, 2020 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20200126/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2020-01-26",
     "notice_effective": "2020-01-26",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20201018/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2020-10-18",
     "notice_effective": "2020-10-18",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20200302/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2020-03-02",
     "notice_effective": "2020-01-26",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20200504/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2020-05-04",
     "notice_effective": "2020-01-26",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20200701/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2020-07-01",
     "notice_effective": "2020-01-26",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20201018/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2020-10-18",
     "notice_effective": "2020-10-18",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20201227/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2020-12-27",
     "notice_effective": "2020-01-26",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ],
   "note": "The Notice 123 and USPS price file effective Oct 18, 2020 show the same retail prices for these packages."
  },
  {
   "effective_from": "2021-01-24",
   "effective_to": "2021-10-02",
   "prices": {
    "first_class_8oz": 4.9,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 8.25,
    "priority_5lb": 12.5
   },
   "product_8oz": "First-Class Package Service—Retail",
   "zone_8oz": 4,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20210124/Notice123.pdf",
   "source_edition": "2021-01-24",
   "source_notice_effective": "2021-01-24",
   "source_title": "USPS Notice 123, effective Jan 24, 2021 (Postal Explorer DMM archive, Jan 24, 2021 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20210124/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2021-01-24",
     "notice_effective": "2021-01-24",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20210523/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2021-05-23",
     "notice_effective": "2021-05-23",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20210829/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2021-08-29",
     "notice_effective": "2021-08-29",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20210405/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2021-04-05",
     "notice_effective": "2021-01-24",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20210523/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2021-05-23",
     "notice_effective": "2021-05-23",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20210620/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2021-06-20",
     "notice_effective": "2021-05-23",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20210829/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2021-08-29",
     "notice_effective": "2021-08-29",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2021-10-03",
   "effective_to": "2021-12-25",
   "prices": {
    "first_class_8oz": 5.2,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 8.5,
    "priority_5lb": 12.75
   },
   "product_8oz": "First-Class Package Service—Retail",
   "zone_8oz": 4,
   "temporary": {
    "kind": "holiday",
    "label": "2021 holiday prices",
    "ends": "2021-12-26",
    "ends_text": "until 12:00 a.m. Central Time, Dec. 26, 2021",
    "source_url": "https://about.usps.com/newsroom/national-releases/2021/0810-usps-announces-proposed-temporary-rate-adjustments-for-2021-peak-holiday-season.htm",
    "source_title": "USPS newsroom, Aug 10, 2021: temporary rate adjustments for the 2021 peak holiday season"
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20211003/Notice123.pdf",
   "source_edition": "2021-10-03",
   "source_notice_effective": "2021-10-03",
   "source_title": "USPS Notice 123, effective Oct 3, 2021 (Postal Explorer DMM archive, Oct 3, 2021 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20211003/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2021-10-03",
     "notice_effective": "2021-10-03",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20211101/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2021-11-01",
     "notice_effective": "2021-10-03",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2021-12-26",
   "effective_to": "2022-01-08",
   "prices": {
    "first_class_8oz": 4.9,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 8.25,
    "priority_5lb": 12.5
   },
   "product_8oz": "First-Class Package Service—Retail",
   "zone_8oz": 4,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20211226/Notice123.pdf",
   "source_edition": "2021-12-26",
   "source_notice_effective": "2021-08-29",
   "source_title": "USPS Notice 123, effective Aug 29, 2021 (Postal Explorer DMM archive, Dec 26, 2021 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20210829/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2021-08-29",
     "notice_effective": "2021-08-29",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ],
   "note": "The 2021 holiday prices ended at 12:00 a.m. Central Time on Dec 26, 2021 (USPS newsroom, Aug 10, 2021). The Dec 26, 2021 DMM archive edition carries the Notice 123 effective Aug 29, 2021, whose prices applied again.",
   "note_sources": [
    {
     "url": "https://about.usps.com/newsroom/national-releases/2021/0810-usps-announces-proposed-temporary-rate-adjustments-for-2021-peak-holiday-season.htm",
     "title": "USPS newsroom, Aug 10, 2021: temporary rate adjustments for the 2021 peak holiday season"
    }
   ]
  },
  {
   "effective_from": "2022-01-09",
   "effective_to": "2022-10-01",
   "prices": {
    "first_class_8oz": 5.2,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 9.45,
    "priority_5lb": 13.15
   },
   "product_8oz": "First-Class Package Service—Retail",
   "zone_8oz": 4,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20220109/Notice123.pdf",
   "source_edition": "2022-01-09",
   "source_notice_effective": "2022-01-09",
   "source_title": "USPS Notice 123, effective Jan 9, 2022 (Postal Explorer DMM archive, Jan 9, 2022 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20220109/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2022-01-09",
     "notice_effective": "2022-01-09",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20220710/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2022-07-10",
     "notice_effective": "2022-07-10",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20220404/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2022-04-04",
     "notice_effective": "2022-07-10",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20220710/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2022-07-10",
     "notice_effective": "2022-07-10",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20220912/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2022-09-12",
     "notice_effective": "2022-07-10",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2022-10-02",
   "effective_to": "2023-01-21",
   "prices": {
    "first_class_8oz": 5.5,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 9.75,
    "priority_5lb": 13.45
   },
   "product_8oz": "First-Class Package Service—Retail",
   "zone_8oz": 4,
   "temporary": {
    "kind": "holiday",
    "label": "2022 holiday prices",
    "ends": "2023-01-22",
    "ends_text": "until 12 a.m. Central, Jan. 22, 2023",
    "source_url": "https://about.usps.com/newsroom/national-releases/2022/0810-usps-announces-proposed-temporary-rate-adjustments.htm",
    "source_title": "USPS newsroom, Aug 10, 2022: temporary rate adjustments for the 2022 peak holiday season"
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20221002/Notice123.pdf",
   "source_edition": "2022-10-02",
   "source_notice_effective": "2022-10-02",
   "source_title": "USPS Notice 123, effective Oct 2, 2022 (Postal Explorer DMM archive, Oct 2, 2022 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20221002/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2022-10-02",
     "notice_effective": "2022-10-02",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20221107/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2022-11-07",
     "notice_effective": "2022-10-02",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2023-01-22",
   "effective_to": "2023-07-08",
   "prices": {
    "first_class_8oz": 5.6,
    "ground_advantage_15_999oz": null,
    "priority_1lb": 10.2,
    "priority_5lb": 14.05
   },
   "product_8oz": "First-Class Package Service—Retail",
   "zone_8oz": 4,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20230122/Notice123.pdf",
   "source_edition": "2023-01-22",
   "source_notice_effective": "2023-01-22",
   "source_title": "USPS Notice 123, effective Jan 22, 2023 (Postal Explorer DMM archive, Jan 22, 2023 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20230122/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2023-01-22",
     "notice_effective": "2023-01-22",
     "cells": [
      "first_class_8oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2023-07-09",
   "effective_to": "2024-01-20",
   "prices": {
    "first_class_8oz": 5.6,
    "ground_advantage_15_999oz": 8,
    "priority_1lb": 10.2,
    "priority_5lb": 14.05
   },
   "product_8oz": "USPS Ground Advantage—Retail",
   "zone_8oz": 4,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20230709/Notice123.pdf",
   "source_edition": "2023-07-09",
   "source_notice_effective": "2023-07-09",
   "source_title": "USPS Notice 123, effective Jul 9, 2023 (Postal Explorer DMM archive, Jul 9, 2023 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20230709/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2023-07-09",
     "notice_effective": "2023-07-09",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20231106/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2023-11-06",
     "notice_effective": "2023-07-09",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ],
   "note": "First price list with USPS Ground Advantage—Retail; First-Class Package Service no longer appears in it. USPS said it would not add holiday surcharges in the 2023 season (USPS newsroom, Sep 19, 2023).",
   "note_sources": [
    {
     "url": "https://about.usps.com/newsroom/national-releases/2023/0919-usps-ready-to-deliver-for-america-during-the-holidays.htm",
     "title": "USPS newsroom, Sep 19, 2023: no holiday surcharges this season"
    }
   ]
  },
  {
   "effective_from": "2024-01-21",
   "effective_to": "2024-10-05",
   "prices": {
    "first_class_8oz": 5.9,
    "ground_advantage_15_999oz": 8.45,
    "priority_1lb": 9.8,
    "priority_5lb": 15.2
   },
   "product_8oz": "USPS Ground Advantage—Retail",
   "zone_8oz": 4,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20240121/Notice123.pdf",
   "source_edition": "2024-01-21",
   "source_notice_effective": "2024-01-21",
   "source_title": "USPS Notice 123, effective Jan 21, 2024 (Postal Explorer DMM archive, Jan 21, 2024 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20240121/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2024-01-21",
     "notice_effective": "2024-01-21",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
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     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20240714/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2024-07-14",
     "notice_effective": "2024-07-14",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20240401/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2024-04-01",
     "notice_effective": "2024-01-21",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20240714/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2024-07-14",
     "notice_effective": "2024-07-14",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2024-10-06",
   "effective_to": "2025-01-18",
   "prices": {
    "first_class_8oz": 6.3,
    "ground_advantage_15_999oz": 8.85,
    "priority_1lb": 10.2,
    "priority_5lb": 15.75
   },
   "product_8oz": "USPS Ground Advantage—Retail",
   "zone_8oz": 4,
   "temporary": {
    "kind": "holiday",
    "label": "2024 holiday prices",
    "ends": "2025-01-19",
    "ends_text": "until midnight Central on Jan. 19, 2025",
    "source_url": "https://about.usps.com/newsroom/national-releases/2024/0905-usps-proposes-temporary-rate-changes-for-2024-holiday-shipping-season.htm",
    "source_title": "USPS newsroom, Sep 5, 2024: temporary rate changes for the 2024 holiday shipping season"
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20241006/Notice123.pdf",
   "source_edition": "2024-10-06",
   "source_notice_effective": "2024-10-06",
   "source_title": "USPS Notice 123, effective Oct 6, 2024 (Postal Explorer DMM archive, Oct 6, 2024 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20241006/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2024-10-06",
     "notice_effective": "2024-10-06",
     "cells": [
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      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2025-01-19",
   "effective_to": "2025-07-12",
   "prices": {
    "first_class_8oz": 6.2,
    "ground_advantage_15_999oz": 8.85,
    "priority_1lb": 9.9,
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   },
   "product_8oz": "USPS Ground Advantage—Retail",
   "zone_8oz": 4,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20250119/Notice123.pdf",
   "source_edition": "2025-01-19",
   "source_notice_effective": "2025-01-19",
   "source_title": "USPS Notice 123, effective Jan 19, 2025 (Postal Explorer DMM archive, Jan 19, 2025 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20250119/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2025-01-19",
     "notice_effective": "2025-01-19",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20241104/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2024-11-04",
     "notice_effective": "2025-01-19",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2025-07-13",
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   "prices": {
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   "product_8oz": "USPS Ground Advantage—Retail",
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   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20250713/Notice123.pdf",
   "source_edition": "2025-07-13",
   "source_notice_effective": "2025-07-13",
   "source_title": "USPS Notice 123, effective Jul 13, 2025 (Postal Explorer DMM archive, Jul 13, 2025 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20250713/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2025-07-13",
     "notice_effective": "2025-07-13",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/NHTML/DMMArchive20250713/Notice123.htm",
     "type": "Notice 123 (archive HTML)",
     "edition": "2025-07-13",
     "notice_effective": "2025-07-13",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20250407/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2025-04-07",
     "notice_effective": "2025-07-13",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2025-10-05",
   "effective_to": "2026-01-17",
   "prices": {
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    "ground_advantage_15_999oz": 10.1,
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   "product_8oz": "USPS Ground Advantage—Retail",
   "zone_8oz": 4,
   "temporary": {
    "kind": "holiday",
    "label": "2025 holiday prices",
    "ends": "2026-01-18",
    "ends_text": "until midnight Central on Jan. 18, 2026",
    "source_url": "https://about.usps.com/newsroom/national-releases/2025/0808-usps-announces-temporary-price-change-for-2025-holiday-shipping-season.htm",
    "source_title": "USPS newsroom, Aug 8, 2025: temporary price change for the 2025 holiday shipping season"
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20251005/Notice123.pdf",
   "source_edition": "2025-10-05",
   "source_notice_effective": "2025-10-05",
   "source_title": "USPS Notice 123, effective Oct 5, 2025 (Postal Explorer DMM archive, Oct 5, 2025 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20251005/Price%20Files%20-%20CSV.zip",
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     "edition": "2025-10-05",
     "notice_effective": "2025-10-05",
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      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20251103/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2025-11-03",
     "notice_effective": "2025-10-05",
     "cells": [
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      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2026-01-18",
   "effective_to": "2026-04-25",
   "prices": {
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    "priority_1lb": 11,
    "priority_5lb": 16.2
   },
   "product_8oz": "USPS Ground Advantage—Retail",
   "zone_8oz": 4,
   "temporary": null,
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20260118/Notice123.pdf",
   "source_edition": "2026-01-18",
   "source_notice_effective": "2026-01-18",
   "source_title": "USPS Notice 123, effective Jan 18, 2026 (Postal Explorer DMM archive, Jan 18, 2026 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20260118/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2026-01-18",
     "notice_effective": "2026-01-18",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/NHTML/DMMArchive20260118/Notice123.htm",
     "type": "Notice 123 (archive HTML)",
     "edition": "2026-01-18",
     "notice_effective": "2026-01-18",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  },
  {
   "effective_from": "2026-04-26",
   "effective_to": "2026-10-03",
   "prices": {
    "first_class_8oz": 8.3,
    "ground_advantage_15_999oz": 10.6,
    "priority_1lb": 11.9,
    "priority_5lb": 17.5
   },
   "product_8oz": "USPS Ground Advantage—Retail",
   "zone_8oz": 4,
   "temporary": {
    "kind": "time-limited",
    "label": "8% time-limited increase",
    "ends": "2027-01-17",
    "ends_text": "until midnight Central Time on Jan. 17, 2027",
    "source_url": "https://about.usps.com/newsroom/national-releases/2026/0325-usps-announces-transportation-related-time-limited-price-change.pdf",
    "source_title": "USPS newsroom, Mar 25, 2026: transportation-related, time-limited price change"
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20260406/Notice123.pdf",
   "source_edition": "2026-04-06",
   "source_notice_effective": "2026-04-26",
   "source_title": "USPS Notice 123, effective Apr 26, 2026 (Postal Explorer DMM archive, Apr 6, 2026 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20260426/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2026-04-26",
     "notice_effective": "2026-04-26",
     "cells": [
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      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20260712/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV)",
     "edition": "2026-07-12",
     "notice_effective": "2026-07-12",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/NHTML/DMMArchive20260406/Notice123.htm",
     "type": "Notice 123 (archive HTML)",
     "edition": "2026-04-06",
     "notice_effective": "2026-04-26",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/NHTML/DMMArchive20260712/Notice123.htm",
     "type": "Notice 123 (archive HTML)",
     "edition": "2026-07-12",
     "notice_effective": "2026-07-12",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20260712/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2026-07-12",
     "notice_effective": "2026-07-12",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ],
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  },
  {
   "effective_from": "2026-10-04",
   "effective_to": null,
   "prices": {
    "first_class_8oz": 8.8,
    "ground_advantage_15_999oz": 11.1,
    "priority_1lb": 12.4,
    "priority_5lb": 18.3
   },
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   "zone_8oz": 4,
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    "label": "2026 holiday prices, on top of the 8% time-limited increase",
    "ends": "2027-01-17",
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    "source_url": "https://about.usps.com/newsroom/national-releases/2026/0825-usps-announces-temporary-price-change-for-2026-holiday-shipping-season.htm",
    "source_title": "USPS newsroom, Aug 25, 2026: temporary price change for the 2026 holiday shipping season",
    "includes": "8% time-limited increase (since Apr 26, 2026)"
   },
   "source_url": "https://pe.usps.com/text/dmm300/Notice123.htm",
   "source_edition": "2026-10-04",
   "source_notice_effective": "2026-10-04",
   "source_title": "USPS Notice 123, effective Oct 4, 2026 (current Postal Explorer price list)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/resources/PriceChange/Time-Limited%20OCT%202026%20Price%20Change%20-%20Notice%20123%20-%20Final.zip",
     "type": "USPS price change file, Time-Limited Oct 2026 (CSV)",
     "edition": "2026-10-04",
     "notice_effective": "2026-10-04",
     "cells": [
      "first_class_8oz",
      "ground_advantage_15_999oz",
      "priority_1lb",
      "priority_5lb"
     ],
     "match": "same-period"
    }
   ]
  }
 ],
 "gaps": [
  {
   "from": "2012-01-22",
   "to": "2013-01-26",
   "reason": "USPS changed prices on January 22, 2012: First-Class Mail retail parcels rose an average of 10.9% (Postal Bulletin 22325) and Priority Mail retail prices an average of 3.2% (Postal Bulletin 22326). The only archived 2012 Notice 123 is marked DRAFT and no USPS price file covers 2012, so its prices are left out.",
   "source_url": "https://about.usps.com/postal-bulletin/2011/pb22325/pdf/pb22325.pdf",
   "sources": [
    {
     "url": "https://about.usps.com/postal-bulletin/2011/pb22325/pdf/pb22325.pdf",
     "title": "USPS Postal Bulletin 22325 (Dec 1, 2011): First-Class Mail retail parcels up an average of 10.9% on Jan 22, 2012"
    },
    {
     "url": "https://about.usps.com/postal-bulletin/2011/pb22326/pdf/pb22326.pdf",
     "title": "USPS Postal Bulletin 22326 (Dec 15, 2011): Priority Mail retail prices up an average of 3.2% on Jan 22, 2012"
    }
   ],
   "draft_url": "https://pe.usps.com/Archive/PDF/DMMArchive20120122/Notice123.pdf",
   "announced_average_changes": [
    {
     "product": "First-Class Mail retail parcels",
     "average_change_pct": 10.9,
     "source_url": "https://about.usps.com/postal-bulletin/2011/pb22325/pdf/pb22325.pdf"
    },
    {
     "product": "Priority Mail retail",
     "average_change_pct": 3.2,
     "source_url": "https://about.usps.com/postal-bulletin/2011/pb22326/pdf/pb22326.pdf"
    }
   ]
  }
 ],
 "page_url": "https://resellerindex.com/history/usps-packages/",
 "csv_url": "https://resellerindex.com/data/history/usps-packages.csv",
 "json_url": "https://resellerindex.com/data/history/usps-packages.json",
 "citation": "The Reseller Index, USPS retail package price history, https://resellerindex.com/history/usps-packages/"
}