About the Project

I built this tool to solve a personal headache: calculating the true breakeven point across different marketplaces without opening five different spreadsheets.

I am a solo developer who leverages AI assistance to build and maintain this tool. By combining my logic with AI's ability to process complex fee structures, I can keep this calculator updated with the latest 2026 data. My goal is to provide a clean, fast, and honest simulator for other independent sellers.

Why "Reality Check"?

In 2026, the "Side-Hustle" market is flooded. Many sellers don't realize that platform fees, ads, and shipping eat up most of their margin. This tool is designed to be the cold splash of water needed before you buy inventory.

"If you can't sketch your unit economics on a napkin, you don't have a business. You have a hobby that costs money."