{
 "name": "USPS Media Mail retail prices by weight, 1-10 lb, since 2011",
 "description": "Single-piece (retail) USPS Media Mail prices for packages of 1 to 10 lb (weight not over), one row per price period, keyed to the date each price took effect. From USPS Notice 123 price lists in the Postal Explorer DMM archive, each row cross-checked against at least one other USPS edition or price file.",
 "unit": "USD per package, by weight not over (lb); the price for any distance",
 "weights_lb": [
  1,
  2,
  3,
  4,
  5,
  6,
  7,
  8,
  9,
  10
 ],
 "verified_on": "2026-10-14",
 "method": "Each row starts on the effective date printed on the first Notice 123 that shows the price (not the date of the DMM archive edition that carries it) and ends the day before the next price took effect. Archive editions sometimes carry a later or earlier notice, so every copy is keyed by its own effective date. Prices are read from the Media Mail Retail single-piece table.",
 "archive_url": "https://pe.usps.com/Archive/DMM",
 "price_file_archive_url": "https://pe.usps.com/Archive/PriceFile",
 "license": "https://creativecommons.org/licenses/by/4.0/",
 "rows": [
  {
   "effective_from": "2009-05-11",
   "effective_to": "2011-04-16",
   "prices": {
    "1": 2.38,
    "2": 2.77,
    "3": 3.16,
    "4": 3.55,
    "5": 3.94,
    "6": 4.33,
    "7": 4.72,
    "8": 5.11,
    "9": 5.5,
    "10": 5.89
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20090511/Notice123.pdf",
   "source_edition": "2009-05-11",
   "source_title": "USPS Notice 123, effective May 11, 2009 (Postal Explorer DMM archive, May 11, 2009 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20100104/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2010-01-04",
     "notice_effective": "2010-01-04"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20100607/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2010-06-07",
     "notice_effective": "2010-03-14"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20110102/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2011-01-02",
     "notice_effective": "2011-01-02"
    }
   ],
   "previous_price_source": {
    "url": "https://pe.usps.com/Archive/PDF/DMMArchive20080512/173.pdf",
    "note": "DMM 173 (updated May 12, 2008) lists a different single-piece price table, so this price started after May 12, 2008; Notice 123 gives May 11, 2009 as its effective date. The archived May 12, 2008 Notice 123 link returns a web page, not the PDF."
   }
  },
  {
   "effective_from": "2011-04-17",
   "effective_to": "2012-01-21",
   "prices": {
    "1": 2.41,
    "2": 2.82,
    "3": 3.23,
    "4": 3.64,
    "5": 4.05,
    "6": 4.46,
    "7": 4.87,
    "8": 5.26,
    "9": 5.65,
    "10": 6.04
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20110417/Notice123.pdf",
   "source_edition": "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"
    }
   ]
  },
  {
   "effective_from": "2013-01-27",
   "effective_to": "2014-01-25",
   "prices": {
    "1": 2.53,
    "2": 2.98,
    "3": 3.43,
    "4": 3.88,
    "5": 4.33,
    "6": 4.78,
    "7": 5.23,
    "8": 5.66,
    "9": 6.09,
    "10": 6.52
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20130127/Notice123.pdf",
   "source_edition": "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"
    }
   ]
  },
  {
   "effective_from": "2014-01-26",
   "effective_to": "2015-05-30",
   "prices": {
    "1": 2.69,
    "2": 3.17,
    "3": 3.65,
    "4": 4.13,
    "5": 4.61,
    "6": 5.09,
    "7": 5.57,
    "8": 6.03,
    "9": 6.49,
    "10": 6.95
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20140505/Notice123.pdf",
   "source_edition": "2014-05-05",
   "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/DMMArchive20150125/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2015-01-25",
     "notice_effective": "2014-09-07"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20140728/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2014-07-28",
     "notice_effective": "2014-01-26"
    }
   ]
  },
  {
   "effective_from": "2015-05-31",
   "effective_to": "2016-04-09",
   "prices": {
    "1": 2.72,
    "2": 3.22,
    "3": 3.72,
    "4": 4.22,
    "5": 4.72,
    "6": 5.22,
    "7": 5.72,
    "8": 6.22,
    "9": 6.72,
    "10": 7.22
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20150531/Notice123.pdf",
   "source_edition": "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"
    }
   ]
  },
  {
   "effective_from": "2016-04-10",
   "effective_to": "2017-01-21",
   "prices": {
    "1": 2.61,
    "2": 3.09,
    "3": 3.57,
    "4": 4.05,
    "5": 4.53,
    "6": 5.01,
    "7": 5.49,
    "8": 5.97,
    "9": 6.45,
    "10": 6.93
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20160606/Notice123.pdf",
   "source_edition": "2016-06-06",
   "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"
    }
   ]
  },
  {
   "effective_from": "2017-01-22",
   "effective_to": "2018-01-20",
   "prices": {
    "1": 2.63,
    "2": 3.12,
    "3": 3.61,
    "4": 4.1,
    "5": 4.59,
    "6": 5.08,
    "7": 5.57,
    "8": 6.05,
    "9": 6.53,
    "10": 7.01
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20170807/Notice123.pdf",
   "source_edition": "2017-08-07",
   "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, Media Mail.csv)",
     "edition": "2017-01-22",
     "notice_effective": "2017-01-22"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20171106/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2017-11-06",
     "notice_effective": "2017-09-03"
    }
   ]
  },
  {
   "effective_from": "2018-01-21",
   "effective_to": "2019-01-26",
   "prices": {
    "1": 2.66,
    "2": 3.17,
    "3": 3.68,
    "4": 4.19,
    "5": 4.7,
    "6": 5.21,
    "7": 5.72,
    "8": 6.23,
    "9": 6.74,
    "10": 7.25
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20181105/Notice123.pdf",
   "source_edition": "2018-11-05",
   "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, Media Mail.csv)",
     "edition": "2018-01-21",
     "notice_effective": "2018-01-21"
    }
   ]
  },
  {
   "effective_from": "2019-01-27",
   "effective_to": "2020-01-25",
   "prices": {
    "1": 2.75,
    "2": 3.27,
    "3": 3.79,
    "4": 4.31,
    "5": 4.83,
    "6": 5.35,
    "7": 5.87,
    "8": 6.39,
    "9": 6.91,
    "10": 7.43
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20190304/Notice123.pdf",
   "source_edition": "2019-03-04",
   "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, Media Mail.csv)",
     "edition": "2019-01-27",
     "notice_effective": "2019-01-27"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20190623/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2019-06-23",
     "notice_effective": "2019-06-23"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20191007/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2019-10-07",
     "notice_effective": "2019-06-23"
    }
   ]
  },
  {
   "effective_from": "2020-01-26",
   "effective_to": "2021-01-23",
   "prices": {
    "1": 2.8,
    "2": 3.33,
    "3": 3.86,
    "4": 4.39,
    "5": 4.92,
    "6": 5.45,
    "7": 5.98,
    "8": 6.52,
    "9": 7.06,
    "10": 7.6
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20200126/Notice123.pdf",
   "source_edition": "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, Media Mail.csv)",
     "edition": "2020-01-26",
     "notice_effective": "2020-01-26"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20201018/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2020-10-18",
     "notice_effective": "2020-10-18"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20200302/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2020-03-02",
     "notice_effective": "2020-01-26"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20200504/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2020-05-04",
     "notice_effective": "2020-01-26"
    }
   ]
  },
  {
   "effective_from": "2021-01-24",
   "effective_to": "2021-08-28",
   "prices": {
    "1": 2.89,
    "2": 3.45,
    "3": 4.01,
    "4": 4.57,
    "5": 5.13,
    "6": 5.69,
    "7": 6.25,
    "8": 6.81,
    "9": 7.37,
    "10": 7.93
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20210124/Notice123.pdf",
   "source_edition": "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, Media Mail.csv)",
     "edition": "2021-01-24",
     "notice_effective": "2021-01-24"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20210523/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2021-05-23",
     "notice_effective": "2021-05-23"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20210620/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2021-06-20",
     "notice_effective": "2021-05-23"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20210405/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2021-04-05",
     "notice_effective": "2021-01-24"
    }
   ]
  },
  {
   "effective_from": "2021-08-29",
   "effective_to": "2022-07-09",
   "prices": {
    "1": 3.19,
    "2": 3.82,
    "3": 4.45,
    "4": 5.08,
    "5": 5.71,
    "6": 6.34,
    "7": 6.97,
    "8": 7.6,
    "9": 8.23,
    "10": 8.86
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20210829/Notice123.pdf",
   "source_edition": "2021-08-29",
   "source_title": "USPS Notice 123, effective Aug 29, 2021 (Postal Explorer DMM archive, Aug 29, 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, Media Mail.csv)",
     "edition": "2021-08-29",
     "notice_effective": "2021-08-29"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20211003/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2021-10-03",
     "notice_effective": "2021-10-03"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20211101/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2021-11-01",
     "notice_effective": "2021-10-03"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20220109/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2022-01-09",
     "notice_effective": "2022-01-09"
    }
   ]
  },
  {
   "effective_from": "2022-07-10",
   "effective_to": "2023-01-21",
   "prices": {
    "1": 3.49,
    "2": 4.16,
    "3": 4.83,
    "4": 5.5,
    "5": 6.17,
    "6": 6.84,
    "7": 7.51,
    "8": 8.21,
    "9": 8.91,
    "10": 9.61
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20220710/Notice123.pdf",
   "source_edition": "2022-07-10",
   "source_title": "USPS Notice 123, effective Jul 10, 2022 (Postal Explorer DMM archive, Jul 10, 2022 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20220710/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV, Media Mail.csv)",
     "edition": "2022-07-10",
     "notice_effective": "2022-07-10"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20221002/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2022-10-02",
     "notice_effective": "2022-10-02"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20221107/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2022-11-07",
     "notice_effective": "2022-10-02"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20220912/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2022-09-12",
     "notice_effective": "2022-07-10"
    }
   ]
  },
  {
   "effective_from": "2023-01-22",
   "effective_to": "2023-07-08",
   "prices": {
    "1": 3.65,
    "2": 4.35,
    "3": 5.05,
    "4": 5.75,
    "5": 6.45,
    "6": 7.15,
    "7": 7.85,
    "8": 8.55,
    "9": 9.25,
    "10": 9.95
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20230122/Notice123.pdf",
   "source_edition": "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, Media Mail.csv)",
     "edition": "2023-01-22",
     "notice_effective": "2023-01-22"
    }
   ]
  },
  {
   "effective_from": "2023-07-09",
   "effective_to": "2024-01-20",
   "prices": {
    "1": 3.92,
    "2": 4.67,
    "3": 5.42,
    "4": 6.17,
    "5": 6.92,
    "6": 7.67,
    "7": 8.42,
    "8": 9.17,
    "9": 9.92,
    "10": 10.67
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20230709/Notice123.pdf",
   "source_edition": "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, Media Mail.csv)",
     "edition": "2023-07-09",
     "notice_effective": "2023-07-09"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20231106/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2023-11-06",
     "notice_effective": "2023-07-09"
    }
   ]
  },
  {
   "effective_from": "2024-01-21",
   "effective_to": "2024-07-13",
   "prices": {
    "1": 4.13,
    "2": 4.87,
    "3": 5.61,
    "4": 6.35,
    "5": 7.09,
    "6": 7.83,
    "7": 8.57,
    "8": 9.32,
    "9": 10.07,
    "10": 10.82
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20240121/Notice123.pdf",
   "source_edition": "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, Media Mail.csv)",
     "edition": "2024-01-21",
     "notice_effective": "2024-01-21"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20240401/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2024-04-01",
     "notice_effective": "2024-01-21"
    }
   ]
  },
  {
   "effective_from": "2024-07-14",
   "effective_to": "2025-07-12",
   "prices": {
    "1": 4.63,
    "2": 5.38,
    "3": 6.13,
    "4": 6.88,
    "5": 7.63,
    "6": 8.38,
    "7": 9.13,
    "8": 9.88,
    "9": 10.63,
    "10": 11.38
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20240714/Notice123.pdf",
   "source_edition": "2024-07-14",
   "source_title": "USPS Notice 123, effective Jul 14, 2024 (Postal Explorer DMM archive, Jul 14, 2024 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20240714/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV, Media Mail.csv)",
     "edition": "2024-07-14",
     "notice_effective": "2024-07-14"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20241006/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2024-10-06",
     "notice_effective": "2024-10-06"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20250119/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2025-01-19",
     "notice_effective": "2025-01-19"
    }
   ]
  },
  {
   "effective_from": "2025-07-13",
   "effective_to": "2026-07-11",
   "prices": {
    "1": 4.47,
    "2": 5.22,
    "3": 5.97,
    "4": 6.72,
    "5": 7.47,
    "6": 8.22,
    "7": 8.97,
    "8": 9.72,
    "9": 10.47,
    "10": 11.22
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20250713/Notice123.pdf",
   "source_edition": "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, Media Mail.csv)",
     "edition": "2025-07-13",
     "notice_effective": "2025-07-13"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20251005/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2025-10-05",
     "notice_effective": "2025-10-05"
    },
    {
     "url": "https://pe.usps.com/Archive/PDF/DMMArchive20251103/Notice123.pdf",
     "type": "Notice 123 (PDF)",
     "edition": "2025-11-03",
     "notice_effective": "2025-10-05"
    },
    {
     "url": "https://pe.usps.com/Archive/NHTML/DMMArchive20250713/Notice123.htm",
     "type": "Notice 123 (archive HTML)",
     "edition": "2025-07-13",
     "notice_effective": "2025-07-13"
    }
   ]
  },
  {
   "effective_from": "2026-07-12",
   "effective_to": null,
   "prices": {
    "1": 4.39,
    "2": 5.13,
    "3": 5.86,
    "4": 6.6,
    "5": 7.34,
    "6": 8.08,
    "7": 8.81,
    "8": 9.55,
    "9": 10.29,
    "10": 11.02
   },
   "source_url": "https://pe.usps.com/Archive/PDF/DMMArchive20260712/Notice123.pdf",
   "source_edition": "2026-07-12",
   "source_title": "USPS Notice 123, effective Jul 12, 2026 (Postal Explorer DMM archive, Jul 12, 2026 edition)",
   "verified_on": "2026-10-14",
   "cross_checks": [
    {
     "url": "https://pe.usps.com/text/dmm300/Notice123.htm",
     "type": "Notice 123 (current HTML)",
     "edition": "2026-10-04",
     "notice_effective": "2026-10-04"
    },
    {
     "url": "https://pe.usps.com/Archive/NHTML/DMMArchive20260712/Notice123.htm",
     "type": "Notice 123 (archive HTML)",
     "edition": "2026-07-12",
     "notice_effective": "2026-07-12"
    },
    {
     "url": "https://pe.usps.com/PriceFile_Archive/CSV/PriceFile_Archive_20260712/Price%20Files%20-%20CSV.zip",
     "type": "USPS price file (CSV, Media Mail.csv)",
     "edition": "2026-07-12",
     "notice_effective": "2026-07-12"
    }
   ]
  }
 ],
 "gaps": [
  {
   "from": "2012-01-22",
   "to": "2013-01-26",
   "reason": "USPS raised Media Mail and Library Mail prices by an average of 2.6% on January 22, 2012 (Postal Bulletin 22325). The only archived 2012 Notice 123 is marked DRAFT and no other USPS edition or price file covers 2012, so its prices are left out.",
   "source_url": "https://about.usps.com/postal-bulletin/2011/pb22325/pdf/pb22325.pdf",
   "draft_url": "https://pe.usps.com/Archive/PDF/DMMArchive20120122/Notice123.pdf",
   "average_change_pct": 2.6
  }
 ],
 "page_url": "https://resellerindex.com/history/media-mail/",
 "csv_url": "https://resellerindex.com/data/history/media-mail.csv",
 "json_url": "https://resellerindex.com/data/history/media-mail.json",
 "citation": "The Reseller Index, USPS Media Mail price history, https://resellerindex.com/history/media-mail/"
}