Amazon FBA vs FBM Profit

Amazon FBA and FBM can produce very different margins for the same product. FBA may reduce handling work and improve delivery expectations, while FBM can give sellers more control over packing, carrier choice, and early testing costs.

Compare the same order twice

Run the product through the Amazon FBA profit calculator, then through the Amazon FBM profit calculator. Keep sale price, product cost, ad cost, and return reserve the same so the fulfillment model is the main variable.

Numbers to pressure test

• FBA fulfillment and storage assumptions.
• FBM postage, packaging, and handling labor.
• Return handling and damaged inventory risk.
• Ad cost per order at the expected conversion rate.

When each model can make sense

FBA is often easier to scale when inventory and fee tiers are understood. FBM can be useful for testing demand, oversized products, custom products, or products with special packing needs.