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Marketplace Platform Fees Calculator

Model the true net margin on Faire, Amazon, Shopify, and custom wholesale platforms. Each layer of fee compounds. This tool makes them visible on one screen.

Free to useCalculator
Product & Revenue Base
Used in Faire processing calc
Each order is treated as one unit at the sell price
Faire
New: 15% · Direct: 0%
Optional ad spend
Amazon / Large Retailer Portal
Avg 8–20% by category
Default: small standard-size item. Edit to your actual FBA fee: varies from $3.22 to $15+ by size and weight.
The original assumed 12 months
Share of the sale price lost on each return. The original assumed 50%.
Shopify / Custom Platform
0% on Shopify Payments

Every fee layer on one screen

Model the true net margin on Faire, Amazon, Shopify, and custom wholesale platforms. Each layer of fee compounds. This tool makes them visible on one screen.

How fees are calculated per unit

  • Faire: commission (15% on new marketplace orders, 0% on Faire Direct) + processing on price plus shipping + flat fee per order + optional promoted listings.
  • Amazon / large retailer portal: referral fee (average 8-20% by category) + FBA fee + storage per month x months stored + returns rate x cost per return.
  • Shopify / custom platform: transaction fee (0% on Shopify Payments) + payment processing + monthly platform fee spread across annual orders.

Check your actual FBA fee with the Amazon FBA calculator.

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Model your true monthly net revenue from Faire (marketplace new, marketplace repeat, and Faire Direct) after all commissions, processing fees, and ad spend. Compare against direct wholesale, sales rep, and other channels.

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Shopify Fee Calculator

Your true monthly Shopify cost: platform fee, card processing, variable platform fee, tax transaction fees, apps and Managed Markets. Includes an all-plan comparison and the Plus variable fee check. Rates sourced from shopify.com/pricing as of April 2026.

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DTC vs Wholesale Comparison

True gross margin comparison between DTC and wholesale after stripping out the cost of selling direct: CAC, fulfillment, platform fees, and returns. The headline DTC margin is usually a fiction.

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