Federal Trade Commission, Consumer Advice · reviewed 2026-10-10
What this source supports: When reselling items online, price after fees, shipping, and condition, and compare your net to trade-in.
Source limit: Marketplace fees change; check the current fee schedule on the platform you use.
These sources support the statements above. They do not show that every person needs this guide. They do not show a specific result.
Limits
This guide computes an estimate from the numbers you enter. It does not list your book or contact a buyer.
Marketplace fees change; check the current fee schedule on the platform you use.
Use current instructions from the responsible organization. This guide is a planning aid, not an official decision or a substitute for qualified advice.
Common questions
What does the App compute?
Estimate your net take-home after marketplace fees, shipping, and condition deductions.
What does the App not do?
This App gives an estimate from your numbers. It does not verify market prices or complete a sale.
Where do the numbers come from?
You enter every number yourself. The sources support the method and the limits. They do not produce a result for your specific case. Keep the original documents next to the sheet you build.
Before you start
Open the linked source page and keep it beside you.
Gather the values the App asks for:
Current used listing price in dollars.
Marketplace seller fee percent.
Estimated shipping cost in dollars.
Condition deduction percent.
Set aside ten quiet minutes; rushed numbers are the main error this guide prevents.
Free Companion App
The App computes the worked example with your own numbers, in your browser.
APP 1
Textbook Resale Value Calculator
Estimate your net take-home after marketplace fees, shipping, and condition deductions.
This guide is edited for clarity and checked against the sources it links. It is not a substitute for official instructions or qualified advice. A linked source does not show that every person needs this guide.