Buy Box

Understanding Amazon's Buy Box Algorithm

RepriceMax Team
November 25, 2025
10 min read
1,534 views

A deep dive into the factors that influence who wins the Buy Box and how to optimize your seller metrics.

What is the Buy Box?

The Buy Box is the white box on the right side of the Amazon product page where customers can add items to their cart. Winning the Buy Box is crucial because over 82% of Amazon sales go through it.

Buy Box Eligibility

Before you can win the Buy Box, you must be eligible. Requirements include:

  • Professional seller account
  • Good standing on key metrics
  • Sufficient sales history
  • Competitive pricing

Key Buy Box Factors

1. Price

Total price (item price + shipping) is a major factor. However, the lowest price doesn't always winβ€”Amazon balances price with seller quality.

2. Fulfillment Method

FBA sellers have a significant advantage over FBM sellers. Amazon trusts its own fulfillment network to deliver excellent customer experiences.

3. Seller Metrics

Amazon tracks numerous performance metrics:

  • Order Defect Rate (ODR)
  • Late Shipment Rate
  • Cancellation Rate
  • Valid Tracking Rate

4. Seller Feedback

Your overall seller rating and recent feedback impact Buy Box eligibility and share.

Optimization Strategies

  1. Maintain ODR below 1%
  2. Ship orders on time (late rate under 4%)
  3. Keep cancellation rate under 2.5%
  4. Respond to customer messages within 24 hours
  5. Use FBA for competitive products

Using Repricing to Win

Intelligent repricing helps you find the optimal price point that wins the Buy Box while maximizing profit. RepriceMax analyzes all these factors to position your products strategically.

Continue Learning

Still have questions? Visit our FAQ or browse the Help Center for detailed guides.

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