Amazon Sales Estimator 📊 Estimate monthly sales from BSR, analyze market size, and benchmark competitor performance. No API key — works out of the box. Installation Three Modes | Mode | When to Use | Input | Output | |------|-------------|-------|--------| | A — BSR Calculator | Quick estimate from known BSR | BSR + Marketplace + Price + Category | Monthly units, monthly revenue | | B — ASIN Lookup | Estimate sales for a specific product | ASIN or product URL | Auto-fetch data + sales estimate | | C — Keyword Market Analysis | Size a niche opportunity | Keyword (+ optional marketplace) | Tot…