FBA sellers source profitable inventory through wholesale suppliers that offer case-pack quantities with consistent unit counts and authorized reseller terms.
Finding the right wholesale supplier is the single biggest variable in an FBA business. The product matters, but the supplier relationship — case pack size, MOQ, pricing tiers, authorization letters, and reorder reliability — determines whether the listing is profitable in month three and whether your account stays in good standing through year two. This guide walks through what case packs actually mean for FBA economics, how to find suppliers that accept newer sellers, and what to verify before placing an order.
What Case Packs Mean for FBA Economics
A case pack is the smallest shipping unit a wholesale supplier will sell. For a beverage brand, that might be 12 cans. For skincare, it could be 6 jars. For a snack brand, 24 bars in an inner case and 4 inner cases per master carton. The case pack is not arbitrary — it reflects how the manufacturer packs the production line and how distributors warehouse inventory.
For FBA sellers, the case pack drives three numbers that decide whether a SKU works:
- Per-unit landed cost. Total invoice plus inbound freight, divided by units in the case. A $48 case of 12 = $4 per unit, before shipping.
- Reorder cadence. If you sell 80 units a month and the case pack is 24, you need to order at least four cases at a time and reorder roughly monthly.
- Inbound prep cost. Some cases ship retail-ready. Others need polybags, suffocation labels, or FNSKU stickers applied — every touch costs time or money.
Claim: Roughly a quarter of Amazon sellers use wholesale as their primary sourcing model. Source: Jungle Scout State of the Amazon Seller Report Date: 2024
Wholesale is the second most common sourcing model after private label, but it has the lowest barrier to entry for sellers who do not want to manufacture. The tradeoff: you compete on the Buy Box against other authorized resellers, so supplier pricing and case-pack economics decide the winners.
A practical test before any first order: take the supplier’s per-case price, divide by units, add an estimated $0.75 to $1.50 per unit for inbound shipping and prep, then run that landed cost against the current Buy Box price minus Amazon’s referral fee (typically 15%) and FBA fulfillment fee. If the margin is under 20% before you account for returns and storage, the case pack does not work at that supplier’s price.
Where to Find Wholesale Suppliers Offering Case Packs
There is no single directory of “good” wholesale suppliers. There are several sourcing channels, and each has different friction, authorization terms, and case pack flexibility.
Brand-direct outreach. Email or contact form to the brand’s wholesale or sales address. This is the highest-quality path because you get authorization directly from the rights holder. Emerging consumer brands — companies under $10M in annual revenue — are usually the most responsive. Established brands often route you to an authorized distributor instead.
Authorized distributors. Companies like KeHE, UNFI, and category-specific distributors carry hundreds of brands and ship in case packs. They typically require a brick-and-mortar account or significant order history before opening a new line. Pricing is wholesale but not the deepest tier.
B2B marketplaces. Platforms that aggregate wholesale catalogs from many brands in one ordering interface. Quality varies — some verify suppliers and authorization, others do not. Marketplaces designed for independent retailers (rather than mass importers) generally carry case-pack quantities suited to FBA scale rather than container loads.
Trade shows. Expo West, Fancy Food Show, Outdoor Retailer, and category-specific shows. You meet brand founders in person, can negotiate first-order terms, and often walk out with samples and a relationship that converts to a wholesale account within a week.
Claim: Third-party sellers account for 62% of Amazon’s online store sales. Source: Marketplace Pulse Date: 2024
The implication for sourcing: there is real volume in third-party selling, which means brands have real incentive to work with authorized resellers who can move case-pack inventory consistently. Smaller brands in particular benefit from FBA sellers who can manage Amazon listings on their behalf.
What to Verify Before Placing a First Case-Pack Order
A wholesale relationship that looks good in an email can fall apart at the first reorder. Before you wire money for a first case-pack order, get answers in writing on each of the following.
Authorization scope. Are you authorized to sell on Amazon specifically? Some brands sell wholesale but restrict Amazon resale or operate a controlled distribution program with a limited number of authorized sellers. Get a one-line email confirming Amazon FBA is allowed.
Case pack and master carton counts. Confirm exactly how many sellable units are in a case, how many cases are in a master carton, and the master carton dimensions and weight. You need this for inbound shipping quotes and FBA shipment planning.
MOQ for first order versus reorders. A supplier might require a 10-case opening order but allow 2-case reorders. Or the opposite. Know both numbers.
Lead time and reorder process. How many business days from PO to ship? Is there a dedicated rep or an online portal? What happens during peak season?
Pricing tiers. Is the per-case price flat, or does it drop at 25, 50, 100 cases? Tier breaks change which SKUs are viable.
Return and damage policy. What happens if a case arrives short or damaged? FBA returns from customers are your problem, but supplier-side defects should be replaced or credited.
Lot codes and expiration dates. For consumables, FBA requires a minimum of 90 days remaining shelf life on inbound. Confirm the supplier ships fresh stock and can provide lot information.
A simple first-order checklist for a new supplier relationship looks like this:
- Resale certificate provided and on file with supplier
- Authorization to sell on Amazon confirmed in writing
- Case pack, master carton, and unit dimensions documented
- Per-unit landed cost calculated and margin verified
- Reorder MOQ and lead time recorded
- First-order placed at minimum viable volume to test the pipeline
The discipline of running through that list before a wire transfer eliminates most of the avoidable mistakes new wholesale FBA sellers make in their first year.
Building a Sustainable Wholesale FBA Catalog
The sellers who build durable FBA businesses on wholesale do not chase one-off deals. They build a portfolio of 15 to 50 SKUs from 5 to 15 brands, each with a documented authorization, a known case pack, and a tracked reorder cadence. They focus on emerging brands where they can be one of a handful of authorized resellers rather than competing against 30 sellers on a saturated commodity listing.
If you are an independent retailer or FBA seller looking to source case-pack quantities from emerging consumer brands — and a brand looking to grow into Amazon and independent retail through qualified partners — Catalist AI connects both sides of that marketplace. Apply to Join to get access to vetted brands with case-pack wholesale terms and authorization paths suited to FBA sellers.