Most Amazon tools calculate sales velocity from raw order data — but when you're out of stock, that data lies. Seller63 filters the noise to show what your products actually sell when they're available.
When a product goes out of stock for 10 days in a month, your “30-day velocity” is based on only 20 days of real sales — but divided by 30. Every competitor tool makes this mistake. The result: you underorder, stock out again, and the cycle repeats.
Our algorithm identifies every day your product was fully in stock, partially constrained, or completely out of stock. Velocity is calculated only from days with genuine demand signals — giving you a number you can actually reorder against.
Our two-pass algorithm filters out stockout periods, partial stockouts, and listing inactive days to reveal true underlying demand. Stop making inventory decisions based on understated sales data.
See today's estimated profit as orders come in, with settled historical P&L powered by Amazon's Seller Economics. Every fee, every refund, every ad dollar — accounted for per product, per marketplace.
Unified view across US, Canada, Europe, Australia, and beyond. Each marketplace's profitability calculated in local currency with cross-marketplace reporting in your chosen currency.
From gross revenue to net profit after every Amazon fee, ad dollar, and refund. Broken down by product line, filterable by marketplace, with real-time estimates for today and settled actuals for history.
Seller63 is currently in development. Join the early access list to be among the first to use stock-out adjusted velocity.