## TL;DR

FBA allows sellers to store products in Amazon's fulfillment centers; Amazon handles picking, packing, shipping, customer service, and returns for those products. Sellers send inventory to Amazon → Amazon stores → Customer orders → Amazon ships. FBA products get Prime badge, increasing visibility and conversion.

## Core Explanation

FBA fees: fulfillment fee (per unit, based on size/weight) + monthly storage fee. Long-term storage fees apply after 365 days. Benefits: Prime eligibility, Buy Box advantage, customer service handled by Amazon. Drawbacks: higher fees than FBM (Fulfillment by Merchant), commingled inventory risk, returns management.

## Further Reading

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