Distribution Control Is the Moat Most Brands Never Build.
When an unauthorised seller pops up on your listing and starts undercutting you, the instinct is to fight them there: on the listing, on price, in the moment. And sometimes you have to. But treating the seller on your listing as the problem is like mopping the floor while the tap's still running. The seller is a symptom. The disease is upstream, and it's called loose distribution.
The durable moat almost no brand bothers to build is control over who can sell your product in the first place. Get that right and most of the offer-level fights simply never happen.
Unauthorised sellers are a symptom of leakage
Ask the question most brands skip: how did that unauthorised seller get your product to sell? They didn't manufacture it. They got it from somewhere - a wholesaler you sold to, a distributor who broke terms, a retail account offloading excess, stock that leaked out of your supply chain and found its way onto Amazon. Every unauthorised offer on your listing is physical evidence of a leak somewhere upstream.
Which means undercutting them on price, or firing off takedown requests, is symptom treatment. You can win that skirmish and another seller appears next month, because the source, the leak, is still open. As long as your product can be bought by anyone, anywhere, with no control over where it ends up, you'll be playing whack-a-mole on your own listing forever.
The real defence isn't faster mole-whacking. It's closing the taps.
What distribution control actually looks like
Controlling distribution is unglamorous, upstream, contractual work which is exactly why most brands never do it. It looks like:
Deciding who is authorised to sell. Actually having a policy, a defined list of authorised sellers, rather than selling to anyone with a purchase order and losing sight of where it goes. If everyone's authorised by default, no one's accountable when stock leaks.
Contractual controls with your distribution partners. Terms that specify who can and can't resell, particularly on Amazon, with real consequences for breaking them. A wholesaler who knows they lose your account if your product turns up on Amazon behaves very differently from one who faces no consequence.
Channel-specific EANs and pack formats. This is the sharp one. If you differentiate your product by EAN - different codes, different pack sizes, different formats for different channels, then leaked stock from one channel can't attach to your Amazon detail page at all. The resale channel simply can't ride your listing, because the barcode doesn't match. You've made your listing physically unattachable by unauthorised stock. That's not fighting the seller; that's building a wall the seller can't climb.
Monitoring as an event, not background noise. Watch the offer count and Buy Box percentage on your ASINs. A new seller appearing on your listing isn't wallpaper. It's an event to investigate, because it's telling you a leak just opened somewhere. Treat it as a signal about your supply chain, not just an annoyance on your listing.
Why this is worth the effort most won't make
Distribution control is genuinely hard graft. It means having awkward conversations with distribution partners, setting up channel-specific SKUs, actually enforcing terms, monitoring constantly. There's no button for it. It's the least exciting work in brand defence, and it's the most powerful, because it prevents the attack rather than responding to it.
And it ties straight back to holding your value. When multiple unauthorised sellers pile onto one listing, they compete for the Buy Box on price, drive that price down, destroy the margin across the whole channel, and leave nobody with the money to invest in advertising which quietly starves your rank. Distribution control is the upstream fix for that entire chain. If unauthorised sellers can't get on your listing, that bleed never starts. You're not treating the symptoms of value erosion; you're preventing the condition.
Every barrier you build here is also, in classic fashion, a competitive moat. Most brands won't do this work. It's too upstream, too unglamorous, too much effort. Which means the brands that do control their distribution have a structural advantage the lazy ones can't match: a listing that stays clean, a price that holds, a margin that funds growth. The frustration of setting it up is the moat. Do the boring upstream work, and you spend far less of your life fighting fires on the listing itself because you turned off the tap instead of buying a bigger mop.
FAQ
Isn't fighting unauthorised sellers on the listing itself still necessary?
Sometimes, yes, especially short-term when you need to protect the Buy Box right now. But treat it as triage, not the fix. If you're not also closing the upstream leak, the same seller (or the next one) reappears once you stop watching, because the source of the leaked stock hasn't changed.
Do channel-specific EANs actually stop unauthorised resale, or just make it harder to track?
They stop it structurally, not just cosmetically. If your Amazon-listed EAN differs from the EAN sold into wholesale or retail, leaked stock physically can't attach to your Amazon listing, since Amazon matches offers to a detail page by barcode. It doesn't stop the leak from happening, but it stops that leaked stock from ever reaching your Amazon customers.
What's the first step for a brand that's never done any of this?
Start with a written authorised seller policy: name who's allowed to sell your product where, put a real consequence in your distributor contracts for breaking it, and start treating any new seller appearing on your listing as a signal to investigate, not background noise. The EAN separation is the more technical, longer-term step once the policy and monitoring are in place.
About the author
Zamir Cajee is co-founder of This Way Up, a UK business specialising in Amazon marketplace strategy, and co-host of The Upside Podcast, where he and the team break down how Amazon actually works — and how it lies to you. Zamir has built multi-million dollar businesses from scratch and has been selling into the EU since 2016.
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