Amazon’s 2026 FBA fee changes are reshaping seller margins faster than most realize. This guide breaks down the latest fulfillment, storage, and low-inventory fees, the hidden costs sellers often overlook, and practical ways to reduce unnecessary charges while protecting profitability on Amazon.

Amazon FBM Seller Metrics 2026: The 5 Scores That Decide Your Buy Box Fate
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Amazon FBM Seller Metrics 2026: The 5 Scores That Decide Your Buy Box Fate

Amazon tracks five performance metrics for seller-fulfilled orders. Each one has a published floor and a higher Buy Box target that most guides don’t mention. Here’s what both numbers look like for each metric — and why the February 2026 OTDR enforcement change matters more than most FBM sellers have realised.

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