Selling a software product for €49 does not mean the seller earns €49.
Marketplace commissions, payment-processing fees, VAT, refunds, affiliate commissions, and fixed transaction costs can reduce the final payout significantly.
The calculation becomes even more confusing when VAT is already included in the displayed price.
I ran into this problem while building esdecode, a marketplace for source code, scripts, plugins, templates, applications, and other developer assets.
To make the fee structure easier to understand, I built a free Seller Earnings Calculator and published its core calculation engine as an open-source TypeScript project.
