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A plain-English breakdown of every Amazon seller fee in 2026: the referral fee by category, the $0.30 minimum, FBA fulfillment fees and what it all adds up to.

Which online marketplace takes the least from sellers in 2026? We rank Vinted, Mercari, Depop, eBay, Etsy, Amazon and more by the effective fee on a $50 sale.

Which resale app keeps you the most money in 2026? Poshmark's 20%, Mercari's processing-only fee and Depop's 0% US/UK selling fee compared with worked examples.

Etsy charges about 9.5% + $0.45 per sale; eBay about 13.6% + $0.30-$0.40. We compare the two fee models with worked examples and say who wins for what.

The simple formula for marketplace seller profit, why your effective fee is higher than the headline rate, and the hidden costs that eat margins.

Amazon's 8-45% referral plus a $39.99/month plan vs Walmart Marketplace's 6-15% referral with no monthly fee. We compare the two big US marketplaces for sellers.