Book Flip Profit Calculator
Use this calculator as a screening tool, not an earnings forecast. Real sale price, fees, fulfillment and returns can differ from your assumptions.
ROI on purchase cost:
Illustrative only. Actual Amazon fees and your costs can vary.
How to use the calculator
Enter what you expect to pay, a conservative sale price, the current referral-fee percentage and your estimated fulfillment, shipping and other per-unit costs. The result shows estimated contribution profit before taxes and general overhead.
Why conservative inputs help
Inventory decisions are asymmetric: an optimistic assumption can cause you to buy a bad book, while a conservative assumption simply causes you to skip a marginal opportunity.
Do not forget time and inventory velocity
A $10 profit earned after two weeks and a $10 profit earned after a year are economically different. Track days held alongside margin.
Verify Amazon-specific numbers
Use Amazon’s current fee pages and Revenue Calculator for product-specific estimates. Third-party calculators can become outdated.
Source-sensitive details were reviewed for this article on August 20, 2026.