--- title: "Media Mail inspection and postage due: what happens" description: "USPS may open any Media Mail package. If it finds postage due, it can charge your label account, return the package or collect from your buyer." canonical: https://resellerindex.com/usps/media-mail/inspection-and-postage-due/ last_updated: 2026-10-19 publisher: "The Reseller Index" --- # What happens if USPS inspects a Media Mail package and it doesn't qualify? USPS's rules: Postage due **USPS can collect the difference in one of four ways: a payment adjustment through your PC Postage provider, returning the package to you, delivering it and collecting the postage due from your buyer, or collecting it at the counter if it's caught at drop-off.** Mailing at Media Mail prices is consent to inspection however the package is closed, and if your PC Postage provider can't take the full amount automatically, you get 14 calendar days (10 business days if notified electronically) to pay before your label printing can be suspended. You have 60 calendar days to dispute a PC Postage adjustment through the provider. Rates verified on Oct 19, 2026 ## The rule, in USPS's words Quoted from the official pages linked below each quote, checked Oct 19, 2026. > “Regardless of physical closure, the mailing of articles at Media Mail or Library Mail prices constitutes consent by the mailer to postal inspection of the contents.” [Domestic Mail Manual 173.2.2](https://pe.usps.com/text/dmm300/173.htm#a_2_2) · USPS Domestic Mail Manual 173: Media Mail and Library Mail prices and eligibility > “Delivering the mailpiece to the addressee and collecting the deficiency as postage due.” [Domestic Mail Manual 604.4.4.3](https://pe.usps.com/text/dmm300/604.htm#a_4_4_3) · USPS Domestic Mail Manual 604: postage discrepancies and postage due > “the customer will be notified by the PES provider to provide funds to resolve the discrepancy within 14 calendar days, or 10 business days if by electronic means” [Domestic Mail Manual 604.4.4.4](https://pe.usps.com/text/dmm300/604.htm#a_4_4_4) · USPS Domestic Mail Manual 604: postage discrepancies and postage due > “Customers wishing to dispute postage discrepancies must do so electronically through the PES provider within 60 calendar days” [Domestic Mail Manual 604.4.4.5](https://pe.usps.com/text/dmm300/604.htm#a_4_4_5) · USPS Domestic Mail Manual 604: postage discrepancies and postage due ## What it costs to ship Media Mail costs the same to every US address, with a 1 lb minimum ($4.39) and any fraction of a pound rounded up. Ground Advantage, USPS's ground package service with tracking included, is priced by weight and zone: online is USPS's commercial price for labels bought online, and the counter price is retail. *USD, weight not over. USPS Notice 123 effective Oct 4, 2026; Ground Advantage includes USPS's temporary holiday prices, in effect until 12 a.m. CT Jan 17, 2027 (Media Mail isn't affected). Selling platforms and label services can have their own rates.* | Package | Media Mail | Ground Advantage online, Zones 1-9 | Ground Advantage at the counter, Zones 1-9 | | --- | ---: | ---: | ---: | | 8 oz | $4.39 | $7.33 to $8.95 | $8.40 to $10.20 | | 1 lb | $4.39 | $8.01 to $11.22 | $10.05 to $13.65 | | 2 lb | $5.13 | $8.39 to $13.42 | $11.30 to $19.80 | | 5 lb | $7.34 | $10.35 to $20.24 | $13.75 to $27.45 | ### Worked examples - A video game sent as 1 lb Media Mail: paid $4.39; Ground Advantage online for 1 lb is $8.01 to $11.22, a difference of $3.62 to $6.83 depending on the zone. - A 5 lb box with a non-qualifying item: $3.01 to $12.90 more by Ground Advantage online than the $7.34 paid. - If your buyer refuses to pay, the package is returned and handed to you when you pay the deficient postage plus return postage ([DMM 604.8.1.2](https://pe.usps.com/text/dmm300/604.htm#a_8_1_2)). Every weight from 1 to 70 lb: [Media Mail rates](https://resellerindex.com/rates/media-mail/) · [Ground Advantage rates](https://resellerindex.com/rates/ground-advantage/) ## Edge cases - Containers like suitcases and duffel bags sent at Package Services prices may not be locked ([PS-100](https://pe.usps.com/text/csr/PS-100.htm)). - Concealing higher-priced mail can bring a fine ([DMM 703.9.1.2](https://pe.usps.com/text/dmm300/703.htm#a_9_1_2)); see [mixed box](https://resellerindex.com/usps/media-mail/mixed-box/). - Pieces with insufficient postage, fewer than 10 at a time, are delivered once the addressee pays the marked charges ([DMM 604.8.1.1](https://pe.usps.com/text/dmm300/604.htm#a_8_1_1)). ## What to do - Ship only qualifying items and permitted enclosures by Media Mail. - Watch your label account for adjustments and dispute within 60 days if the item qualified. ## Related questions - [What if I ship a book and a non-media item together by Media Mail?](https://resellerindex.com/usps/media-mail/mixed-box/) Whole box pays more. Unless the extra item is a permitted enclosure, the whole package pays the higher price, and USPS can fine concealed higher-priced mail. - [What happens to undeliverable or refused Media Mail?](https://resellerindex.com/usps/media-mail/undeliverable-and-refused/) Return isn't free. With no endorsement it's forwarded postage due to a new address for 12 months, or returned with return postage charged at the Media Mail price. - [Can you send board games, puzzles or video games by Media Mail?](https://resellerindex.com/usps/media-mail/games-and-puzzles/) No. USPS rules that games, including board games and video games, are used primarily for entertainment, and jigsaw puzzles aren't on the Media Mail list. - [Can you ship comic books by Media Mail?](https://resellerindex.com/usps/media-mail/comic-books/) Only with no ads. A comic needs no ads except announcements of books; an issue with other ads pays First-Class Mail or Ground Advantage prices. [All 25 Media Mail questions](https://resellerindex.com/usps/media-mail/) · [Cheapest way to ship books](https://resellerindex.com/guides/cheapest-way-to-ship-books/) ## Sources Rates verified on Oct 19, 2026 from each official page below. - [USPS Domestic Mail Manual 173: Media Mail and Library Mail prices and eligibility](https://pe.usps.com/text/dmm300/173.htm) - [USPS Domestic Mail Manual 604: postage discrepancies and postage due](https://pe.usps.com/text/dmm300/604.htm) - [USPS Customer Support Ruling PS-100: Sealing of Package Services Matter (updated June 2014)](https://pe.usps.com/text/csr/PS-100.htm) - [USPS Domestic Mail Manual 703: military mail and mixed classes](https://pe.usps.com/text/dmm300/703.htm) - [USPS Notice 123: price list (effective Oct 4, 2026), Media Mail and Ground Advantage prices](https://pe.usps.com/text/dmm300/Notice123.htm) - [USPS: temporary price change for 2026 holiday shipping (Aug 25, 2026)](https://about.usps.com/newsroom/national-releases/2026/0825-usps-announces-temporary-price-change-for-2026-holiday-shipping-season.htm) Subscribe: https://resellerindex.com/subscribe/ --- The Reseller Index Researched and drafted with AI assistance from each platform's and carrier's own published pages. A full-time reseller runs The Reseller Index and will edit every newsletter issue once the newsletter starts. Every number links to its source and carries the date we checked it. Spot an error? [Tell us](https://resellerindex.com/corrections/) and we'll fix it in the public corrections log. General information, not tax, legal or financial advice. Not affiliated with or endorsed by eBay, Amazon, Mercari, Poshmark, Depop, Whatnot, Etsy, TikTok Shop, USPS, the IRS or the software companies whose prices we track; their names belong to them. Each page shows the date its own rates were last checked. Sponsored placements are always labeled "Sponsored". © 2026 The Reseller Index. No trackers, no ad cookies.