If you sell on Amazon, you already know FBA prep is where small mistakes turn into expensive problems — mislabeled units, non-compliant poly bags, or a missed expiration date can get a shipment refused at the fulfillment center. A good FBA prep partner makes that risk disappear. Here’s what great FBA prep looks like in 2026, and how to choose the right 3PL for it.
What “FBA prep” actually covers
Amazon has strict requirements for how inventory arrives at its fulfillment centers. A 3PL that does FBA prep handles the work that keeps your shipments compliant:
- FNSKU labeling — applying Amazon’s barcode to each unit so it’s tracked correctly.
- Poly bagging & suffocation warnings — for apparel and soft goods, with the required warning text.
- Bundling & kitting — combining multiple SKUs into a single sellable unit.
- Bubble wrap & protection — for fragile or breakable items.
- Expiration & lot tracking — for consumables, which Amazon requires to be labeled a specific way.
- Box content & carton labeling — accurate box-content info so your shipment checks in cleanly.
Why brands outsource FBA prep instead of doing it themselves
Three reasons come up again and again:
- Time. Prep is tedious and scales badly. Every hour you spend labeling units is an hour you’re not spending on marketing or product.
- Compliance risk. Amazon’s rules change, and non-compliance means refused shipments, removal fees, or even listing suspensions.
- Flexibility. A 3PL that does both FBA prep and direct-to-consumer fulfillment lets you split inventory between Amazon and your own store without a second vendor.
What to look for in a 3PL for FBA prep
- Amazon experience. They should speak FNSKU, box content, and Seller Central fluently.
- Transparent pricing. Prep fees are where a lot of 3PLs bury per-unit surcharges. You want to know exactly what a labeled, bagged, boxed unit costs before you commit.
- Both FBA and DTC under one roof. So you can run Amazon and your Shopify store from the same inventory pool.
- Fast turnaround. Inventory sitting in prep is inventory not selling.
The hidden fees to watch for
The common bill-shock culprits in FBA prep are per-unit label fees, bagging fees, and “special handling” surcharges that only show up after you’ve onboarded. This is the same opacity problem that plagues 3PL pricing in general — and it’s exactly what we’re built to avoid.
How Shipo approaches FBA prep
We do FBA prep and DTC fulfillment from the same facility, with pricing you can see before you sign — no surprise per-unit surcharges. And because we ship from a 0% sales-tax Delaware hub, your non-Amazon orders get fast, cost-efficient East Coast delivery from the same inventory.
Want your FBA prep costs mapped out clearly? Get a transparent quote and we’ll break down exactly what your prep and fulfillment will cost — no obligation.
Related reading
- 7 Best ShipBob Alternatives in 2026
- ShipMonk vs Shipo: An Honest 3PL Comparison
- How our fulfillment center works
Before you commit, understand what fulfillment costs, and browse our 3PL & fulfillment FAQ for the terms sellers trip on.