"We only buy five of certain sizes. We don't want to split that inventory with A
By Liranhirschkorn · May 19, 2026 · Curated by George's Blog
"We only buy five of certain sizes. We don't want to split that inventory with Amazon."
That's the line size-inclusive apparel founders walk around with.
Here's the part the dilemma misses: FBA isn't binary.
Run your popular sizes on FBA. Those carry your conversion rate — Prime adds 30-40% conversion lift — and your algorithmic rank.
Run your long-tail sizes on FBM. The niche cuts you only buy five of. Five units stay in your warehouse, ship from there when ordered. Slower shipping, lower conversion. But no inventory split. No over-buying. No waste.
Same listing. Mixed fulfillment by SKU.
The popular sizes carry the listing's revenue and rank. The long-tail sizes earn what they earn. The brand never has to choose between size-inclusivity and Amazon.
Brands sit out the channel for a constraint that already has a fix.
30-40% conversion lift on the sizes that move. Zero forced inventory on the ones that don't.