Multi-platform comparison in one click
Instead of calculating each site's complex fee structure separately, compare all 7 top marketplaces side by side instantly.
Marketplace Fee & Profit Comparator
Compare selling fees and take-home profits side-by-side across major ecommerce platforms: Etsy, eBay, Amazon, Shopify, Poshmark, and Mercari.
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How to use Marketplace Fee & Profit Comparator
- 1
Enter the listing sale price of your item.
- 2
Enter your cost of goods sold (COGS / item production cost).
- 3
Enter the shipping price charged to the buyer and the actual postage cost you pay.
- 4
Review the side-by-side fee breakdown and profit margin for each platform.
- 5
See which platform yields the highest net dollar profit for your price point.
Why use this tool?
Accurate tiered fee structures
Includes transaction percentages, payment processing flat fees, and listing charges specific to each marketplace.
Profit margin visualization
A grouped bar chart highlights exactly where you keep the highest margin.
Frequently asked questions
Which online marketplace has the lowest fees?
Standalone platforms like Shopify have the lowest transaction fees (~2.9% + $0.30 payment processing), but you must drive your own customer traffic. Among marketplaces with built-in buyer traffic, Mercari (10%) and Etsy (~9.5% combined) are generally lower than eBay (~13.25%) and Amazon (typically 15% referral fee).
Does eBay take fees on the sales tax or shipping charged to buyers?
Yes. eBay final value fees (typically 13.25% + $0.30) are calculated on the total amount the buyer pays, including the item price, shipping cost, and any applicable sales tax.
Is Poshmark expensive for sellers?
Poshmark charges a flat $2.95 fee for sales under $15, and 20% commission on sales of $15 or more. While higher than other platforms, Poshmark provides pre-paid USPS Priority Mail shipping labels up to 5 lbs, simplifying logistics.
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