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What is BSR (Best Sellers Rank)?

Amazon's demand signal: how recently and often a product sells in its category.

BSR - Best Sellers Rank, often just "sales rank" - is the number Amazon assigns to every product in a category based on recent sales. Rank 1 is the category's best seller; a rank in the millions means it rarely sells. The number updates through the day and reacts strongly to recent orders.

A single rank snapshot can mislead: one lucky sale can spike a slow product's rank for a day. That is why sourcing decisions read the rank history over weeks and months, not the number in front of you - a product that holds a low rank steadily is demand you can rely on; a one-day spike is not.

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ASINUPC / EANBuy BoxFBAFBMSeller CentralReferral feeFBA fulfilment fee

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Frequently Asked Questions

What is a good BSR to buy at?＋

There is no universal number - rank is relative to the category size. A 50,000 rank in a huge category sells daily; the same rank in a tiny one may not. Read the rank history over weeks and the estimated sales it implies, not the snapshot.

Does BSR update in real time?＋

Amazon recalculates it through the day, and single sales can move it sharply on slow products. That volatility is why one glance at today's rank misleads - the history chart is the signal.