Gumroad vs KDP vs Leanpub for Python Technical Ebooks: Real Numbers If you're producing a technical Python ebook, you have three credible distribution platforms. They work completely differently, and using the wrong one for your situation costs real money. Here's the comparison with actual fee calculations, not marketing copy. 🎁 Free: AI Publishing Checklist — 7 steps in Python · Full pipeline: germy5.gumroad.com/l/xhxkzz (pay what you want, min $9.99) Platform overview Gumroad Amazon KDP Leanpub Fee structure 10% per sale 30–65% royalty cut 20% per sale File types Any (EPUB, PDF, ZIP) EPUB → MOBI only EPUB, PDF Discovery None (you drive traffic) Amazon search Minimal Payout Weekly Monthly (60-day delay) Monthly API ✅ Full REST ❌ None ❌ None Email capture ✅ Built-in ❌ No ✅ Built-in Pay-what-you-want ✅ ❌ ✅ Code bundles ✅ (ZIP files) ❌ ✅ Min viable price $0 $0.99 $0 Fee calculations at real price points At $9.99 per sale Platform Gross Platform cut Your net Gumroad $9.99 $1.00 (10%) $8.99 KDP (70% tier)*…