Wholesale for an Amazon FBA seller means shipping cases and pallets to a business on a purchase order instead of shipping single units to a fulfilment centre and letting Amazon handle the rest. Almost everything that Amazon quietly did for you — receiving, picking, packing, invoicing, collecting payment, handling returns — now happens on your side. This article is about that operational shift: what changes in the warehouse, in the inventory plan, in the paperwork and in the calendar, so that the first wholesale order does not break the FBA business that pays for it.
The good news is that an FBA seller already runs a supply chain. The supplier, the freight forwarder, the prep centre and the inbound shipment plan are all in place. Wholesale adds a second destination for the same goods and a different unit of measure.
From the unit to the case
On Amazon the unit of measure is one. In wholesale it is the case, and above that the pallet. A retailer orders "four cases" and a distributor orders "two pallets," and the brand needs to know exactly what those mean for its product.
Take a product that ships in a master carton of 12 from the factory. That master carton becomes the wholesale case. A standard pallet might hold 48 of those cartons in four layers of 12. So:
- 1 case = 12 units
- 1 pallet = 48 cases = 576 units
A store's first order of 4 cases is 48 units. A distributor's first order of 2 pallets is 1,152 units. Both numbers should be on the line sheet before anyone asks, alongside case dimensions and weight, because buyers plan shelf space and freight from them. If the factory's master carton is an awkward 30, it may be worth having the factory pack inner cases of 6 so a small store can order a sensible quantity.
Each case also needs a case-level barcode (a GS1-128 or ITF-14, distinct from the unit UPC) once chains and distributors are involved. Independent stores rarely care; a distributor's warehouse will not receive a pallet without one.
Splitting inventory between FBA and wholesale
This is where FBA sellers get hurt first. The inventory plan was built for one channel, and a wholesale order that takes 600 units out of the same pool can push the listing into low stock, trigger the low-inventory fee, and cost rank while the case order earns thinner margin.
The fix is to plan two allocations from the same production run. If the listing sells 1,400 units a month and the brand wants 60 days of FBA cover, that is 2,800 units for Amazon. If wholesale is forecast at 800 units a month with net 30 terms and a 2-week lead time, the brand wants a further 1,600 on hand. The next production order is sized for both, and the split is decided when the container lands, not when a purchase order arrives.
Two practical rules keep this honest:
- Wholesale stock lives outside FBA. Cases for retail should never be pulled back from a fulfilment centre. Removal orders are slow, expensive, and the units arrive as loose polybagged singles that have to be re-cased.
- The listing keeps its safety stock. A wholesale order that would drop FBA below the reorder point is either delayed or partially shipped. The Amazon rank is the asset that funds everything else.
A brand that already uses a 3PL for FBA prep has an easy answer: the 3PL holds the wholesale cases and ships them on request. A brand that preps in a garage will need either space for pallets or a 3PL, and the second option is usually cheaper than it sounds once freight is counted.
What arrives instead of an order notification
On Amazon an order is a line in Manage Orders that Amazon has already paid for. In wholesale an order is a purchase order: a document from the buyer listing SKUs, quantities, agreed prices, ship-to address, requested ship date and the PO number that has to appear on every carton, packing slip and invoice.
The PO starts a sequence the brand now owns:
- Confirm the PO within a day, flagging anything that cannot ship in full.
- Pick and pack by the case, with a packing slip in the box or attached to the pallet.
- Ship by parcel for a few cases or by LTL freight for pallets, using the buyer's routing guide if they have one.
- Invoice on shipment, with the PO number, terms and due date on it.
- Collect when the invoice falls due, and chase it when it does not.
None of these is hard. All of them are new, and each has a way of going wrong that Amazon used to prevent: a missing PO number on the carton gets a shipment refused at a distributor's dock; a pallet shipped without an appointment sits in a trailer for three days.
Who ships the order: you, a 3PL, or Amazon?
There are three ways to fulfil wholesale, and each fits a different order size.
Self-fulfilled. Cases go out from the brand's own space. Fine for the first dozen accounts if there is room and someone to pack. Freight is booked per shipment through a broker.
A 3PL. The brand's wholesale stock sits at a third-party warehouse that receives POs, picks cases, ships parcel or LTL, and often handles retailer compliance labels. This is the standard answer once orders arrive weekly or a distributor is involved.
Multi-Channel Fulfilment from FBA. Amazon can ship an order from FBA inventory to a business address. It works for small bulk orders — an office wanting 30 units, a gym wanting 50 — and the mechanics are in how an Amazon seller sells in bulk. It does not work for real wholesale: units arrive as singles in Amazon-branded boxes, there is no packing slip with a PO number, and many retailers refuse it outright.
Most FBA sellers land on a 3PL for wholesale within the first six months. The decision is easier if the 3PL already does FBA prep, since the same inbound container can be split at the dock.
Lead times and the calendar
FBA trained sellers to think in inbound shipment plans and check-in times. Wholesale runs on a different calendar, and it is set by the buyer.
Independent stores order when they need stock and expect shipment within a week. Chains order against a reset date months ahead and will state a ship window; missing it can mean the order is cancelled. Distributors order on a cycle and expect a consistent lead time, often five to ten business days from PO to ship.
The consequence for a brand that manufactures overseas is that wholesale commitments have to be covered by inventory already in the country. A chain PO for a March reset cannot be filled from a container that lands in April. The production calendar has to move forward by a season, and the cash to fund that is part of the wholesale decision, discussed in when an Amazon seller is ready to go wholesale.
What about returns, damages and shortages?
On Amazon, returns are a line on the settlement report. In wholesale there is no default; the brand sets a policy and the buyer negotiates it.
A workable starting policy for stores: damaged-in-transit cases are replaced or credited if reported within a few days of delivery with a photo; short shipments are credited against the invoice; unsold product is not returnable except by prior agreement. Distributors will push for more, and a cap on returns as a share of the invoice is a reasonable middle.
Damage prevention matters more than the policy. Cases that survive a UPS route to a fulfilment centre may not survive being stacked five high on a pallet through two cross-docks. A stretch-wrapped pallet with corner boards, cases oriented the right way up and a "do not stack" label where needed prevents most of the claims.
Does wholesale change the FBA business?
Yes, in ways that mostly help. Production runs get bigger, which lowers the landed cost of every unit including the ones going to FBA. The brand starts holding stock in the country, which makes FBA restocks faster. Packaging gets improved for the shelf, which improves listing photos. And the case-level discipline — barcodes, pallet specs, a packing slip on every shipment — makes the brand look like a supplier, which is what a retail buyer wants to see at the first meeting.
The first order is the hard one. Picking which store gets it, and what to send them before it, is the subject of taking an FBA product to its first retail account. And if the question is which stores and distributors would want cases in the first place, the preview at WholesalePilot shows who already stocks comparable products from a pasted listing link, which is a quicker start than guessing at case quantities for a buyer who does not exist yet.