I’ve spent a decade on the buying side of the table, and I’ve placed brands into Costco and other national retailers. The advice below is written from that seat — how the decision actually gets made, not how it looks from the outside.
How Costco buys, and why it changes the pitch
Costco carries a deliberately small number of items compared with a grocery or big-box competitor. The model is built on a treasure hunt: a curated set of products that deliver unusual value, sell through quickly, and turn inventory fast. That single fact reshapes everything about how you approach them.
It means you are not pitching a range. You are pitching one item that can do a lot of volume at a member price, with margin that works for both sides after the format’s economics. A broad line sheet is the wrong instinct here. Depth beats breadth.
What the buyer is actually evaluating
- Value the member feels. The item has to read as a genuine deal at Costco’s price, without cheapening the brand.
- Volume capacity. Can you reliably supply a region or the full club count, in packaging built for the format?
- Margin and logistics that hold up. Freight, pack-out, and terms are part of the item, not an afterthought.
- Proof of demand. Sell-through elsewhere, a waitlist, velocity data — something that lowers the buyer’s risk.
- A team that can execute. Buyers place bets on brands that will not create problems after the PO.
The readiness that decides yes or no
Here is the part most brands skip. A retailer this size will stress-test your margin math, your supply capacity, your packaging, and your replenishment plan — often in the first meeting. If any one of those is soft, the answer is no, and a no is expensive because buyer attention doesn’t come around often.
So the work happens before the pitch: get the economics clean, confirm you can supply the volume, build the pack that fits the format, and have a replenishment story that keeps the item in stock once it moves. Walking in ready is the single biggest lever you control.
Broker, direct, or something else
A broker can open a door and is worth it in some categories. But a warm, well-prepared direct approach often works when the item is clearly right and the brand is genuinely ready. Spend less energy on which path and more on making the underlying item and operation undeniable — that’s what carries a buyer meeting either way.
How to become a Costco vendor
Becoming a Costco vendor starts with the same readiness work covered above, then adds a few steps that are specific to the format:
- Reach the right buyer for the category and lead with the single item you want on the floor, not a full line sheet.
- Price to a member deal that still protects margin once Costco’s markup structure is applied.
- Confirm supply for the format: pallet-ready packaging, freight and pack-out costs built into the price, and enough volume to fill a region or the full club count.
- Prepare for a roadshow or a warehouse test in some categories before a full rollout, which is how Costco de-risks a new vendor before committing club-wide space.
- Have vendor paperwork and compliance ready: insurance, EDI capability, and Costco’s routing and packaging requirements, so onboarding does not stall a yes.