Best Sellers Rank

Amazon's sales rank for a product within a category, where 1 is the best-selling item in that category.

Definition

What Best Sellers Rank means

Best Sellers Rank (BSR) is the number Amazon prints on a product page, such as #12 in PC Gaming Keyboards. It ranks a product against others in the same category by recent sales, and Amazon recalculates it often, so it moves through the day.

Amazon does not publish unit sales, so sellers and analysts use BSR as the public proxy for them. A single reading says little; a series of readings shows whether a product is gaining or losing sales relative to its category.

Clair returns best_sellers_rank[] on the product endpoint as rank and category pairs, one for each category Amazon lists. The best-sellers endpoint returns the top of a category's list directly.

In the data

How it appears in a response

GET /v1/product?engine=amazon&asin=B0CF3VGQFL · product.best_sellers_rank

[
  {
    "rank": 12,
    "category": "PC Gaming Keyboards"
  }
]

Best Sellers Rank for B0CF3VGQFL. From a recorded Amazon Products API response.

Subscribe to the API you need.

Each Clair API is its own monthly request quota. Unused requests expire. Every API has a free tier to try it.

Get API Key →Compare plans

Glossary