Glossary · Price Tracking
BSR
Best Sellers Rank (BSR) is a number Amazon updates hourly that ranks how well a product sells relative to others in its category — #1 is the top seller. A lower BSR means faster sales. Because BSR is relative and category-dependent, research tools convert it into estimated monthly sales using category-specific models.
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The short list — full rankings live on the best-tools page.
AMZScout
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