Overview

Amazon is increasing Buy with Prime fulfillment fees by approximately $0.24 per unit, effective January 15, 2026. The adjustment — three times larger than the standard FBA fee bump of $0.08 per unit — reflects Amazon's continued investment in storage infrastructure, faster delivery capabilities, and improved return processing. For merchants enrolled in the program, the increase demands a careful reassessment of product-level profitability and fulfillment strategy.

Key Points

• Per-unit fee increase of $0.24 — Applied across Buy with Prime fulfillment, roughly triple the $0.08 increase hitting standard FBA orders.
• Effective date: January 15, 2026 — Sellers have a narrow window to audit margins and adjust strategies before the new rates take effect.
• Smaller than Multi-Channel Fulfillment hikes — MCF fees are rising by $0.30 per unit, making Buy with Prime comparatively more economical for off-Amazon direct-to-consumer fulfillment.
• Driven by operational costs — Amazon cites expanded warehouse capacity, faster delivery infrastructure, and enhanced return handling as the primary cost drivers.

The Financial Impact for Sellers

• Compounding budget implications — A seller shipping 10,000 units per month through Buy with Prime will see an additional $2,400 in monthly expenses, translating to roughly $28,800 in added annual fulfillment costs.
• Margin erosion for thin-margin businesses — For businesses operating on thin margins (common among private-label sellers and smaller brands), this increase can meaningfully erode profitability without corresponding price adjustments.
• Uneven impact by product type — Larger, heavier items typically face steeper absolute fee increases due to dimensional weight and storage requirements, while high-velocity products with strong sell-through rates may absorb the increase more easily.
• Product-level analysis essential — Sellers with a mixed catalog should expect uneven margin pressure across their SKU lineup, making product-level analysis essential rather than relying on blanket assumptions.