How prep center pricing is structured
FBA prep center pricing is usually built from per-unit fees for each prep step, plus per-carton or per-pallet fees for receiving and outbound, plus materials and storage where they apply. Very few providers charge one flat price per unit for everything, because a unit that only needs a label costs far less to handle than a unit that is bubble-wrapped, bundled with two others and shrink-wrapped.
The practical consequence is that two quotes with different headline rates can produce very different invoices. The only reliable way to compare providers is to price your actual SKU mix, step by step, through each quote.
Receiving fees
Receiving covers unloading, counting and checking in your inbound freight. It is typically priced per carton, per pallet or per container, with floor-loaded containers usually costing more than palletized freight because the cartons must be handled individually.
Ask what receiving includes. A good receiving fee covers carton counts against your packing list and photos of damage. Some providers charge separately for sorting mixed-SKU cartons, for unscheduled deliveries or for inbound that arrives without documentation. If you buy from many suppliers or retail sources, the way small parcels are received and matched to orders can be one of your biggest costs.
Per-unit prep fees
Per-unit fees cover the labor at the prep bench. Common line items include:
- FNSKU or other marketplace label, applied and scan-verified
- Polybag, including the bag and suffocation warning where required
- Bubble wrap or overbox for fragile items
- Bundling or multipack assembly, often priced by number of components
- Sold-as-set or do-not-separate labels
- Expiration date labels
- Sticker removal or relabeling over existing labels
- Inserts, cards or promotional materials
Bundles and kits are where pricing varies most. Ask whether bundle pricing is per finished bundle or per component, and whether the outer bag or shrink-wrap is included.
Materials, cartons and outbound
Materials are either included in per-unit fees or billed separately. Polybags, bubble wrap, void fill, shipping cartons, pallets and stretch wrap all cost money, and a quote that leaves them out can look artificially low.
Outbound fees cover packing finished units into cartons, applying carton labels, confirming box content information and building pallets for LTL shipments. These are usually per carton or per pallet. If cartons arrive from the factory over weight or oversized and must be repacked, expect a repack charge. Freight to the marketplace is billed separately, whether you use the marketplace's partnered carrier program, your own carrier account or a rate arranged by the prep center.
Storage and minimums
Storage is often free or low cost during a short prep window and charged after that, usually per pallet, per bin or per cubic foot per month. If you plan to hold reserve inventory outside Amazon to replenish in waves, storage becomes a real line item, and you should compare it to the marketplace storage and capacity costs you are avoiding.
Also ask about account minimums, monthly platform or software fees, onboarding fees and charges for special projects or rush turnaround. None of these are unreasonable on their own, but they belong in the comparison.
Costs that depend on your inbound quality
A large share of prep cost is decided before your inventory ever reaches the prep center. Clean, well-documented inbound is fast and cheap to process. Messy inbound is slow and expensive, no matter whose rates you are paying.
The factors that most often raise prep cost:
- Mixed-SKU cartons that must be opened and sorted before prep can start
- Packing lists that do not match what is in the container
- Factory labels on the wrong SKU or in the wrong format, requiring relabeling
- Cartons over marketplace weight or size limits that must be repacked
- Retail packaging that fails drop testing and needs extra protection
- Inventory arriving without advance notice, outside scheduled receiving
Most of these are fixable at the source. Give your supplier a clear packing specification: one SKU per carton where possible, carton labels showing SKU and quantity, accurate packing lists and carton weights within marketplace limits. If your factory applies FNSKU labels, send it the exact label files from your shipment plan.
Ask your prep center to report inbound problems with photos after each shipment, then share those reports with your supplier. Over a few production runs, cleaner inbound lowers your prep bill more reliably than negotiating a lower per-unit rate. It also shortens turnaround, which keeps listings in stock and reduces the reserve inventory you need to carry.
The hidden cost of cheap prep
The cheapest prep is not the lowest per-unit fee; it is the prep that does not have to be paid for twice. A mislabeled shipment can lead to units received under the wrong listing, inventory reconciliation work, removal orders and lost sales while stock is unavailable. Missing polybag warnings, unlabeled sets and overweight cartons can lead to noncompliance fees or refused shipments.
These costs rarely show up on the prep invoice, so they are easy to ignore when comparing quotes. When you evaluate a provider, weigh how they prevent errors, such as scan verification, inspection and carton checks, against the price difference. A few cents more per unit is usually cheap insurance compared with one bad shipment.
How to get a quote you can compare
To get accurate prep pricing, give every provider the same information: your SKU list with dimensions and weights, the prep steps each SKU needs, monthly unit volumes, how inventory arrives, which marketplaces you ship to and how long you expect inventory to stay before it ships out.
Then ask each provider to price a realistic sample month line by line. Put the quotes side by side and calculate the all-in cost per unit delivered to the marketplace, including receiving, materials, outbound and storage. That number, not the label rate, is the one to compare. Prep Center Co. provides transparent line-item pricing and returns a custom quote within 24 hours.
Frequently asked questions
How much does an FBA prep center charge per unit?
Per-unit cost depends on the prep steps each SKU needs. A label-only unit costs much less than a bubble-wrapped or bundled unit, and receiving, materials, outbound and storage are usually billed on top. The right comparison is the all-in cost per unit delivered to the marketplace.
Are materials included in prep fees?
Sometimes. Some providers include bags, bubble wrap and labels in per-unit fees, while others bill materials separately. Ask each provider to state this clearly so quotes are comparable.
Do prep centers charge for storage?
Most offer a short prep window with little or no storage charge and bill storage after that, usually per pallet, bin or cubic foot per month. Long-term reserve storage is priced separately.