learning · free Companion App · local in this browser
Textbook Resale Value Calculator
Estimate your net take-home after marketplace fees, shipping, and condition deductions.
Privacy: This App does not send or save your entries. Do not enter passwords, codes, full account numbers, or private identifiers.
Enter your numbers
Enter only the details needed for this task. Check them against the original source.
Your result
Your result will appear here.
Engine self-test
Running golden cases…
Source notes
- Federal Trade Commission, Consumer Advice — Selling Your Used Stuff Online
When reselling items online, price after fees, shipping, and condition, and compare your net to trade-in.
Reviewed 2026-10-10. Marketplace fees change; check the current fee schedule on the platform you use.
What this App does not do
This App gives an estimate from your numbers. It does not verify market prices or complete a sale.
This free App has no paid features. It does not contact an agency, employer, bank, seller, provider, or other person.