Decision tool
Marketplace Fee Comparison Calculator
Side-by-side net profit for Amazon, Etsy, and eBay-style channels using manual fee assumptions—not live marketplace APIs.
Your inputs
Adjust the fields and review the result in this workbench.
All fees are manual inputs. Marketplace programs change frequently—use Seller Central / Etsy / eBay fee pages for your category.
Cite this calculator
Manual fees only; 30% margin list price uses simplified fixed-fee stack.
Last reviewed: August 2026
Marketplace Fee Comparison Calculator. (August 2026). Useful Tools Online. https://usefultoolsonline.com/marketplace-fee-comparison-calculator/
Interpretation
Channel choice
Lower referral % does not always win—fulfillment, ads, and returns can flip the ranking.
Avoid mistakes
Common mistakes
A few things that can lead to misleading results or poor decisions.
Using headline referral rate without payment processing.
Ignoring FBA size-tier jumps.
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