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Updated Wednesday, October 21, 2026

The ecom field manual

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Straight answers

The questions store owners search for, answered in a few sentences. Each one links to the full story and its sources.

What would your store pay elsewhere?

Shopify Payments, Shopify with an outside processor, Checkout Champ and Whop on the same store, in dollars per month. Plug in your own numbers in the calculator.

Run your own numbers in the fee calculator

Sample store · $100K/mo · $50 orders · 10% intl

Monthly fees

  1. Whop · Whop storefront and checkout$0
  2. Shopify Payments · Basic plan$0
  3. Checkout Champ · Growth plan, your processor's rate$0
  4. Shopify + outside processor · Basic plan, your processor's rate$0

Published US online rates; Shopify plans billed yearly. Whop includes $0.07 Radar per order. Outside processor assumed at 2.9% + 30¢. Excludes 3D Secure checks, disputes, payouts and reserves.