Mercari passes USPS's temporary 8% increase into Ground Advantage and Priority Mail labels
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From May 7, 2026, Mercari's prepaid USPS Ground Advantage and Priority Mail labels reflect USPS's temporary 8% price increase of April 26, which USPS called a transportation-related price change and Mercari tied to rising fuel costs. Mercari's Media Mail and First-Class Envelope labels were not affected. USPS's temporary prices run until 12 a.m. CT on Jan. 17, 2027. Mercari prices its labels the same in all 50 states rather than by zone, so where the buyer lived didn't matter. Its rate table "updated May 7, 2026" listed 1 lb Ground Advantage at $7.48 at the Best rate and $7.59 at the Standard rate. Mercari's next change to its Ground Advantage and Priority Mail label prices, announced September 17, took effect on October 19. Where the seller paid shipping, the higher label price came out of the sale.
Your net on a $10 / $25 / $50 sale: n/a / n/a / n/a
Mercari didn't publish the label prices before and after May 7 side by side, so the change per label can't be calculated from its pages. On USPS's own prices the 8% added $0.70 to a 1 lb retail Ground Advantage label in Zone 1.
Source: Mercari help: Shipping change announcements (Apr 7, 2026) · Mercari help: Fees on Mercari · USPS newsroom, Mar 25, 2026 (the 8% increase) · verified
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The Reseller Index change tracker, "Mercari passes USPS's temporary 8% increase into Ground Advantage and Priority Mail labels," https://resellerindex.com/changes/mercari/2026-05-07-mercari-labels-usps-8-percent/, verified Oct 30, 2026. Free to reuse with a link (CC BY 4.0). First published on the tracker Oct 19, 2026.
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