An Amazon FBA prep service takes your inbound inventory, makes each unit compliant, and forwards it to Amazon — and in 2026 the published rates for that work start around $0.29 per unit for labeling alone and run to $1.00 per unit for standard prep at a mid-volume tier. The number that decides whether you can use one at all is not the per-unit rate, though: it is the minimum. Several established prep centers will not take a seller below 2,500–5,000 units per month, and one publishes a $6,000 quarterly floor. This guide reads the rate cards that are actually published, shows what is missing from all of them, and works out the point where prepping in-house still beats outsourcing.
Every figure below is attributed to the vendor page it came from and dated 2026-08-24. Where a company publishes no rate at all, that is stated rather than replaced with an “industry average.”
What an Amazon FBA Prep Service Does That Software Does Not
A prep center is a warehouse that receives your goods before Amazon does. The standard scope is: unload and count the inbound shipment, inspect for damage, apply FNSKU labels, cover any manufacturer barcodes, poly bag or bubble wrap whatever the category requires, bundle multipacks, build and label the outbound cartons, and hand them to a carrier bound for a fulfillment center.
That is a labor service. It is a different purchase from FBA prep software, which is a tool that helps you print labels and build box-content files in your own space. And it is different again from the rules both of them exist to satisfy — the bag thickness, the suffocation-warning threshold, the barcode placement — which are set by Amazon and documented in FBA prep requirements by product type. Software lowers the cost of doing the work; a prep service removes the work; neither changes the standard the units are held to.
Why the Question Got Sharper in 2026
Amazon stopped offering prep and item labeling for US FBA shipments on 2026-01-01. Units arriving unprepped are no longer routed into a cheap in-house Amazon service as a matter of course — they are handled as unplanned services, at a per-unit charge, with delayed receiving. The evidence trail for that date is laid out in our FBA prep requirements guide.
The practical effect: prep moved from an optional line item to a fixed cost in every seller’s unit economics. Your only remaining choices are who performs it and where.
The Five Line Items on a Prep Center Invoice
Almost every dispute between a seller and a prep center starts with a quote that covered one of these and silently omitted the others.
- Receiving. Charged per shipment, per carton, per pallet, or per container — and container rates are large flat numbers. ShipCalm publishes $39.50 per shipment, $12.45 per single-SKU pallet, $2.95 per carton on a mixed pallet, $495 per 20-foot container and $795 per 40-foot container (shipcalm.com/pricing, checked 2026-08-24).
- Per-unit prep. The headline number. It may or may not include labeling, bagging, and inspection — ShipCalm prices them separately at $0.29 inbound item labeling and $0.69 inbound item bagging, so an item needing both costs $0.98 before anything else.
- Storage. Billed by cubic foot or by pallet, weekly, daily, or monthly. ShipCalm publishes $0.19 per cubic foot per week plus $1.45 per SKU per week for SKU management; PrepVia publishes $0.07 per cubic foot per day with two days free (prepvia.com/pricing, checked 2026-08-24). Those two units are not directly comparable without doing the arithmetic yourself — which is the point.
- Outbound freight to the fulfillment center. Essentially never in the per-unit rate. Compare against what you would pay yourself; see FBA freight forwarders for how that leg is priced.
- Platform, account, and minimum fees. PrepVia lists a $50/month Starter level with $0/month on higher levels. ShipCalm sells weekly platform plans from $49/week (Essentials DTC) to $1,750/week (Legendary) on top of the transactional fees above, with a $6,000 quarterly minimum.
What Prep Centers Actually Publish
Rates below are quoted from each vendor’s own pricing page on 2026-08-24, with the vendor’s own billing unit preserved. Blank spaces are real: most of this industry does not publish a rate card.
| Provider | Published prep rate | Billing unit | Stated minimum |
|---|---|---|---|
| AMZ Prep | $0.40 | per item (FBA prep) | 300 orders/month; will not service OA/RA sellers under 2,500 units/month |
| AMZ Prep | $1.50 | per box (case forwarding) | as above |
| MyFBAPrep — Standard | $1.00 | per unit | 5,000 units/month |
| MyFBAPrep — Pro | $0.50 | per unit | 50,000 units/month |
| MyFBAPrep — Platinum | custom | per unit | more than 50,000 units/month |
| PrepVia | from $0.40 | per unit | none stated; $50/month on Starter level |
| ShipCalm | $0.29 labeling / $0.69 bagging | per inbound item | $6,000 per quarter |
| eFulfillment Service | not published | — | not published |
| We Fulfill It | not published | — | volume discounts above 200 packages/month |
Three readings matter more than the numbers themselves.
The cheap headline rates carry the harshest gates. AMZ Prep’s $0.40 per item is among the lowest published anywhere, and the same page states it does not service online- or retail-arbitrage sellers under 2,500 units per month. MyFBAPrep’s $0.50 tier requires 50,000 units a month. A published rate you cannot qualify for is not a price you can use.
“From $X” is a floor, not a quote. PrepVia’s pricing page says pricing “is determined through a short alignment call,” and its separate FBA prep pricing page shows a comparison table of industry ranges — FNSKU labeling $0.10–$0.55, standard prep $0.40–$1.50, full-service $0.90–$2.00 — while listing its own column as “Competitive” rather than a number. Treat any table where the publisher’s own cell is a word instead of a figure as marketing, not pricing.
Quote-only is the norm, not a red flag by itself. eFulfillment Service publishes no rates and routes to a quote request; its pricing article does state it charges no setup fee while noting competitors charge “$100 to well over $500” (efulfillmentservice.com, checked 2026-08-24). We Fulfill It shows only a worked example on its homepage — 500 orders at $2.50 plus four pallets at $25 — not a rate card. Quote-only vendors are fine; quote-only vendors who will not put the full fee schedule in writing before you ship are not.
When Doing It Yourself Still Wins
The break-even is arithmetic, and it has exactly two inputs you have to supply: how many units you can prep per hour, and what your hour is worth.
DIY beats outsourcing when:
(your hourly rate ÷ units prepped per hour) + materials per unit < quoted per-unit rate
Run it against the published rates. Using an illustrative $25/hour for your time and $0.12/unit in bags, labels and tape — both are placeholders; substitute your real numbers:
| Quoted rate | Throughput you must beat to win on cost |
|---|---|
| $0.29/unit (labeling only) | ~147 units/hour |
| $0.40/unit | ~89 units/hour |
| $1.00/unit | ~28 units/hour |
On the illustrative inputs above, at $1.00 per unit a focused person clearing 28 simple units an hour breaks even, and most people beat that on flat, easy SKUs. At $0.40 per unit, you need production-line throughput to win — which is why the sellers who genuinely save money in-house are the ones running a labeled workstation with a thermal printer, not a kitchen table.
Cost is not the only axis, and it is often not the deciding one. Doing it yourself wins outright when: your volume is below every minimum in the table above; your SKUs need judgment a warehouse cannot apply cheaply (fragile antiques, mixed-condition used goods, hand-assembled bundles); your margin cannot absorb an extra freight leg; or your inventory turns fast enough that a second warehouse stop adds days you do not have. Outsourcing wins when: containers land at a port far from you, prep is a daily grind rather than a weekly batch, or your own hour has a higher-value use — a point worth checking against your real per-unit economics in FBA fees and profit.
Ten Questions Before You Ship Anything
Ask these in writing, and keep the reply.
- Send the complete fee schedule, not the per-unit rate. Receiving, storage, materials, outbound, and any platform fee, in one document.
- What exactly is inside the per-unit rate? Name each operation: label, bag, bubble, inspect, box.
- What is the minimum — units, orders, or dollars — and over what period? Quarterly floors bite differently from monthly ones.
- Is there a surcharge for arbitrage or mixed-condition inventory? Several centers price it above wholesale, or refuse it.
- What is your receiving turnaround, and when does the storage clock start? Free days are worth real money on slow-moving stock.
- Who pays when a unit is prepped wrong and Amazon charges an unplanned service fee? Get the remedy in writing.
- How do you handle inbound discrepancies — short-shipped cartons, damaged goods? Ask for the documentation they produce, because that paperwork is what a claim is built on.
- What is your outbound freight arrangement, and can I use my own carrier account?
- Do you support Amazon’s Warehousing and Distribution flow? Relevant if you are staging inventory upstream; see Amazon AWD.
- Can I see a redacted sample invoice from a client at my volume? A real invoice reveals every fee the quote left out.
Two operational notes. Barcode handling is the single most common cause of rejected shipments, so confirm the center follows the current standard for FNSKU placement and covering manufacturer codes — the specifics are in Amazon barcode requirements. And storage at the prep center is only one of two storage meters running; the other is Amazon’s, covered in FBA storage fees.
Red Flags
- A per-unit rate quoted verbally with no written schedule behind it.
- No stated receiving turnaround, or a turnaround with no consequence attached.
- Storage billed by pallet with no definition of what fills a pallet.
- A comparison table on the vendor’s own site where competitors get numbers and the vendor gets an adjective.
- Refusal to name the outbound carrier or to let you audit freight cost.
- No named point of contact for shipment discrepancies.
Where Reimbursements Fit
A prep center adds a hop between your supplier and Amazon, and every extra hop is a place inventory goes missing or arrives short. Whoever is at fault, the recovery paperwork lands on you. ReimburseOps is an independent self-serve audit tool for that job: you upload the FBA Reimbursements report exported from Seller Central and it flags under-paid, missed, or oddly-valued records by severity. It is subscription-priced — a free tier at $0 and Pro at $19/month, with no commission on what you recover (checked 2026-07-27) — which is a different model from the managed services covered in our roundup of FBA reimbursement services. The free tier shows the first three flagged records in full.
Frequently Asked Questions
How much does an Amazon FBA prep service cost per unit in 2026?
Published rates on vendor pricing pages checked 2026-08-24 range from $0.29 per unit for inbound labeling alone (ShipCalm) to $1.00 per unit for standard prep at MyFBAPrep’s 5,000-unit tier, with AMZ Prep and PrepVia both publishing $0.40 per unit as a starting rate. None of those figures include receiving, storage, or outbound freight to Amazon.
Does Amazon still prep and label units for sellers?
No. Amazon stopped offering prep and item labeling for US FBA shipments on 2026-01-01. Units that arrive needing prep are handled as unplanned services at a per-unit charge, with slower receiving.
What is the minimum volume for an FBA prep center?
It varies enormously and it is the real gate. AMZ Prep states a 300 orders/month minimum and declines arbitrage sellers under 2,500 units/month; MyFBAPrep’s published tiers start at 5,000 units/month; ShipCalm sets a $6,000 quarterly minimum. Smaller sellers exist below all of these and are typically served by local centers that do not publish rates.
Is a prep center the same as FBA prep software?
No. A prep center is a warehouse performing the labor; prep software is a tool you run to print FNSKU labels and generate box-content data while doing the work yourself. Compare the tools in our FBA prep software guide.
Should I use a prep center for retail arbitrage?
Only after checking the surcharge. Mixed-condition and single-unit sourcing is more expensive to process than uniform wholesale cartons, and several centers either price it higher or decline it under a volume threshold — AMZ Prep’s page says so explicitly.
Bottom Line
Judge a prep center on three things in this order: whether you clear its minimum, what its complete fee schedule says once receiving, storage and outbound are added, and how it documents discrepancies. The per-unit headline is the least informative number on the page. If your volume sits under every published minimum, that is not a failure — at the rates above, an organized in-house workstation is genuinely competitive until prep becomes a daily job rather than a weekly batch.
Rates in this guide were read from vendor pricing pages on 2026-08-24 and change without notice. Confirm current terms in writing before shipping.