Direct answer: January 2025 had 1 tracked marketplace fee change in the FlipCalc timeline, covering Mercari. The lead event was 2025-01-06: Mercari reintroduced a 10% seller fee on item price plus buyer-paid shipping, added a 3.6% buyer protection fee, and removed the separate buyer payment-processing fee for new and updated listings. Use this monthly digest as an editorial checkpoint, then open the source row and current calculator before changing listing prices or rewriting old fee guidance.
Before0% seller selling fee
After10% seller fee on item price plus buyer-paid shipping
$50 impact+$5.00
A monthly fee-change page is not a freshness label for every marketplace fee. It is a dated checkpoint for the events that actually changed during January 2025. If a marketplace is not listed here, this digest does not prove that its fee schedule stayed unchanged; it only means the source-backed FlipCalc timeline has no tracked event for that platform in this month.
For seller pricing, start with the event row, read the source, then open the current calculator for the affected platform. Old fee announcements can explain why older articles or seller forum posts disagree with current math, but current listing decisions still need today's fee rule, category, shipping setup, promotion setting, item cost, and accepted-offer floor.
For SEO and editorial work, use this page as a source-backed update hub. Link old evergreen fee guides to the relevant month when a reader needs historical context, but keep calculator titles and current-fee summaries aligned with the latest official platform source rather than repeating the month's old before/after wording.