Costco Next is the most structurally attractive omni-channel expansion available to an Amazon brand right now, and it’s the one we push back on hardest in diligence. Not because the channel is bad. Because the price of admission is a published number below your own MAP, sitting on a public web page, in exactly the format Amazon’s pricing comparison is built to read.
After managing hundreds of brands on Amazon, we’ve watched enough channel launches produce a mystery Buy Box loss six weeks later to know where this one leads if nobody sequences it. So here’s the honest version: what Costco Next is, why the economics are genuinely good, and the one thing you have to solve before you sign.
What Costco Next actually is
It is not a marketplace in the Amazon sense, and it is not a Costco vendor relationship.
Costco Next is a curated, members-only storefront where Costco sends its members directly to participating brands’ own sites. The brand holds the inventory, ships the order, handles returns, and owns customer service. Costco supplies the member traffic and the pricing guarantee. Roughly 100 brand partners were participating as of recent counts, across electronics, home and furniture, outdoor and sporting goods, travel, beauty and personal care, health and wellness, specialty grocery, and pet.
That structure is the whole appeal. There is no pallet-in. No slotting. No 90-day terms on a six-figure PO you financed. No chargebacks for a routing guide violation. No buyer meeting where a single decision-maker decides whether your year happens.
Costco’s own leadership has flagged it as a growth area — CFO Gary Millerchip noted that Costco Next sales in Q3 of fiscal 2025 matched the program’s entire fiscal 2022 volume. That’s a retailer building, not maintaining. And it’s still small and quiet enough that inclusion is a real differentiator rather than a table stake.
One thing to be clear about: the fee structure is not publicly disclosed. We can’t tell you the take rate, because nobody publishes one, and any blog quoting a specific percentage — including anyone quoting this one back to you — is guessing. Get it in your own agreement before you model contribution. A channel whose economics you can’t compute is not a channel you can prioritize.
Why the economics look better than they are
Run the naive comparison and Costco Next wins easily.
On Amazon you’re paying a referral fee plus FBA fees plus storage, and — the part most brands still underweight — an advertising line that on many accounts now runs 10-20% of revenue and is priced by how ambitious your competitors happen to be this quarter. On Costco Next you’re paying a referral-style arrangement into an audience with a paid membership, no auction, and no fifteen competing thumbnails on the same screen.
That’s real. Member traffic converts differently than open-web traffic because the qualification already happened at the membership desk.
But the comparison brands run is contribution per channel in isolation, and channels are not independent. That’s the mistake we see over and over: a spreadsheet with one column per channel, each one defensible, and no row for what one channel does to another.
The entry requirement is the problem
Here’s the part that should stop you.
The consistent requirement reported across supplier guidance for Costco Next is that participating brands make their products available at prices below their minimum advertised price, as member-exclusive pricing not offered through any other channel.
Read that as an Amazon operator rather than as a sales leader. You are being asked to publish, permanently, on a public page, a lower price for the identical unit than the one you’re defending everywhere else.
Amazon’s Marketplace Fair Pricing Policy compares your Amazon price not only to other Amazon offers but to your prices elsewhere — Walmart, Target Plus, TikTok Shop, your own Shopify. A materially higher Amazon landed price relative to your own pricing on another channel can cost you the Featured Offer. We’ve covered the mechanism and the architectural fix in detail in our piece on the omni-channel pricing tax, so we won’t re-litigate it here.
Two things worth restating, though.
First, nobody publishes a tolerance. Industry estimates cluster around a couple of points above the lowest comparable offer. Treat any specific number as a working assumption, not a rule. The mechanism is not in dispute; the threshold is.
Second, “members-only” is doing less protective work than it sounds like. The pricing sits on a web property that is indexed, screenshotted, and written about constantly by deal sites. It is not a segment code buried behind a login and an email list. If your defense against an automated price comparison is that the page is slightly harder to reach, that’s not a defense, it’s a hope.
What it costs when it goes wrong
The failure mode isn’t dramatic, which is why it takes so long to catch.
You launch. Four to six weeks later, revenue on your Amazon hero SKUs softens. Nobody notices the Buy Box is gone, because you’re the only seller on the listing — the page looks completely normal, just “See All Buying Options” instead of Add to Cart. Then Sponsored Products stops serving, because ad delivery ties to Featured Offer ownership. Impressions fall, ACOS spikes, and the campaigns get restructured to fix a problem that lives in a pricing policy on a different channel entirely.
On a $200K/month brand where 20 ASINs carry 70-80% of revenue, a month of that is not a rounding error, and the restructure that follows costs more than the outage did.
The 90-second check: if you’re the sole seller and you don’t own the Buy Box, that isn’t competition. Look for a pricing status flag in Manage All Inventory, and search your own product logged out to see what the open web is showing.
How to take the channel without paying for it twice
We are not telling you to skip Costco Next. For the right catalog it’s one of the better risk-adjusted expansions available, precisely because you’re not financing inventory to find out. We’re telling you the sequence is not optional.
Build a channel-exclusive SKU, not a discount. This is the whole answer and it’s the same answer we give for Walmart and DTC. Automated price comparison works on product identity. A different pack configuration — different count, different bundle contents, different UPC — is a different product, and Costco members are the single most receptive audience in retail to a larger pack at a better per-unit price. The club shopper’s expectation and your parity defense point in the same direction here, which is rare. Use it.
If you can’t build a distinct pack, bundle rather than discount. Add the accessory, the extended warranty, the consumable refill. You want the member offer to be better in value, not lower in price on an identical unit.
Model the Amazon exposure before you build the SKU, not after. Decide the pack architecture up front. Retrofitting a channel-exclusive configuration after you’ve accumulated reviews and rank on the shared ASIN is painful and slow.
Pull a Buy Box percentage baseline on your top 20 ASINs in week one and week four post-launch. You cannot detect this without a baseline, and almost nobody pulls one before expanding. Screenshot organic rank on your top ten keywords while you’re in there.
Confirm the fee structure and the pricing obligation in writing, then run the contribution math on the exclusive pack — not on your Amazon unit economics with a different top line.
Assign one person who signs off on any price change on any channel. Parity maintained by vigilance fails, because more people can change a price than understand the policy.
Who should be doing this in Q4 versus January
Category fit first: Costco Next skews toward considered purchases with a value story — home, outdoor, tech accessories, travel, wellness, premium consumables. If your product needs explaining before it’s compared, member traffic is a good audience. If you’re a $12 commodity item competing on price, this channel has nothing for you and the MAP requirement has everything to take.
On timing: building a new pack configuration means new UPCs, new packaging, and inbound lead time. If that work isn’t already underway, you are not launching a properly architected Costco Next presence before peak. Launching an unarchitected one — same unit, lower price — into the ten weeks where your Amazon Featured Offer is worth the most money it will be worth all year is the single worst version of this decision.
Decide now. Build in Q4. Launch in January with the pricing architecture already in place.
FAQ
Can I just apply to Costco Next?
Brand selection is curated rather than an open self-serve signup, and the public documentation on the process is thin. Treat inbound interest as a real asset if you have it, and don’t build a quarter’s plan around an application whose criteria aren’t published.
Does Amazon really check pricing on a members-only site?
Treat any publicly reachable price as in scope. We’ve seen DTC promotional pricing trigger comparisons more often than any marketplace listing, precisely because that’s where brands feel most entitled to discount. A member gate that a deal aggregator can screenshot is not a private channel.
Isn’t selling different packs at different prices dishonest?
No. Club-versus-grocery pack differentiation has been standard retail practice for decades. The thing that creates a problem is the identical unit at two visibly different prices. Different contents at different prices is just merchandising.
What if I’m already on Costco Next and my Amazon Buy Box is unstable?
Diagnose before you change anything. Confirm you’re actually losing the Featured Offer, check your landed price including shipping against the comparison — landed price is what’s read, not item price — and if it’s a pricing flag, the fastest fix is usually the Amazon-side price, with the pack architecture as the durable solution. Appeals are possible but slow, which is why the structural fix beats the appeal path every time.
Should I just price everything identically everywhere?
It’s the simplest defensible policy for a small catalog and we’ve recommended it more than once. It also surrenders channel promotional strategy entirely, and it still doesn’t protect you from resellers or marketplace-funded discounts you don’t control. Pack differentiation gets you the protection without the surrender.
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