Free tools for online sellers · fees checked October 2026
Know your profit before you set the price.
Every fee on 11 selling platforms, your real profit per sale, and the price that hits your target margin.
Marketplaces
~9.5% + $0.45EtsyTransaction, processing, listing and Offsite Ads fees.~13.6% + $0.40eBayFinal value fee, per-order fee, promoted listings.15% + FBAAmazonReferral, FBA, storage and plan fees, FBA or FBM.15% most itemsWalmartReferral fee by category, WFS fulfillment, new seller savings.
Resale apps
20%PoshmarkFlat $2.95 under $15, 20% above. Buyer pays shipping.10%Mercari10% selling fee with a $1 minimum, Instant Pay.3.3% + $0.45DepopNo selling fee in the US, payment processing, Boosted listings.8% + 2.9%WhatnotLive selling commission plus payment processing.
Your store & social
11 platformsEvery major US marketplace, resale app and storefront in one place.
Updated October 2026We check every fee against the platforms' own rules and date each page.
Reverse pricingType the margin you want and get the exact price to charge.
Free and privateNo sign-up. Your numbers stay in your browser.
Which platform keeps the least?
On a typical $30 sale, Depop (US) and TikTok Shop without creators take the smallest share, and Facebook Marketplace is free for local pickup. Mercari and Whatnot take around 10% to 11%, Etsy about 10% to 11%, and eBay around 14% to 15%. Poshmark takes 20%, and Amazon with FBA often takes a third of a low-priced item. Shopify takes the least per order, but you pay for your own traffic.
The right answer depends on your item and costs. The comparison tool runs the numbers on every platform at once.