I want to be clear about something before we go further: I have deep respect for Amazon sellers. Many of them are exceptional operators, sharp, resourceful, and genuinely committed to the brands they carry. This article isn't about them.
It's about the ones who aren't. And about the brands who can't tell the difference.
The self-preservation playbook
Every Amazon reseller operates with a primary objective that has nothing to do with your brand's success: protect their own position in your supply chain. That's not a criticism. It's just reality. A reseller who loses access to your product loses their livelihood. Of course they're going to say whatever it takes to protect that access.
What that sounds like in practice:
"You need to make me exclusive, because if you don't, the other sellers will race to the bottom and destroy your brand on Amazon."
"I've been selling your products since before you had an Amazon strategy. That relationship has to count for something."
"Those other sellers aren't doing it right. They don't understand your brand the way I do."
"I have a direct line to Amazon's vendor team. You need me at the table."
None of these statements are necessarily false. Some of them might even be true. The problem is that brands hear these claims and respond emotionally, with loyalty, with guilt, with inertia, rather than analytically. The reseller knows this. The playbook works because brands let it work.
The knowledge gap that makes it possible
A few years ago, I was sitting across from a brand manager, a smart experienced executive at a real consumer brand, and he said something that stopped me cold. He'd been frustrated with the complexity of his Amazon channel, the reseller issues, the pricing problems. Then he leaned back and said:
"Amazon is so simple. My ten-year-old could do it. Honestly, you could train an animal to manage an Amazon account."
He believed this genuinely. And because he believed it, he had no framework for evaluating the people managing it on his behalf. He couldn't distinguish between a reseller who was doing exceptional work and one who was coasting on a relationship. He had no standards because he didn't believe standards were necessary.
His resellers knew exactly how much he understood about the platform. They operated accordingly.
This isn't an isolated story. I've encountered versions of it more times than I can count. The brand managers who are most vulnerable to reseller manipulation are usually the ones who believe Amazon is easy, because that belief leads them to delegate without oversight, and delegation without oversight is where the problems breed.
What sellers tell you versus what they actually do
The gap between a reseller's claims and their actual performance on Amazon is often significant. Here's what I mean:
A reseller who tells you they're "protecting your brand" but wins the Buy Box by undercutting every other seller by $0.50 isn't protecting your brand. They're optimizing for their own Buy Box share at the expense of your pricing structure.
A reseller who tells you they "know the platform" but has never run a sponsored product campaign on your ASINs, has never enrolled a listing in A+ Content, has never flagged a listing suppression issue. They know how to log in. That's not the same thing.
A reseller who's been with you for years and invokes that relationship every time you raise a concern about their performance has confused tenure with accountability. Longevity is not performance. The two need to be evaluated separately.
The exclusivity trap
The exclusivity pitch is the most sophisticated version of the self-preservation playbook. A reseller who convinces a brand to grant them exclusive Amazon rights has eliminated their competition not through performance, but through persuasion. Once exclusivity is granted, the performance pressure largely disappears. The brand has no leverage and no alternative. The reseller knows this, which is why they push for it so hard.
How to actually grade your Amazon sellers
If you're going to have resellers on your Amazon channel, and many brands will for legitimate structural reasons, you need a framework for evaluating them that isn't based on relationship, tenure, or how persuasively they make their case. You need a 3P seller score.
Here's what that score should measure:
Buy Box behavior. What percentage of the time does this seller hold the Buy Box on the ASINs they carry? More importantly, how do they hold it? Are they winning through legitimate means (competitive pricing, strong fulfillment metrics, FBA) or are they suppressing other sellers through pricing tactics that damage your brand's price integrity?
Catalog coverage. What percentage of your catalog are they actually offering? A reseller who carries three of your thirty SKUs, always the three with the best margin, isn't a brand partner. They're a cherry-picker. Catalog coverage measures commitment. A genuine partner wants to represent the brand, not just the hits.
Advertising investment. Are they running Sponsored Products on your ASINs? Sponsored Brands? Are they investing in visibility, or are they riding your organic ranking and letting your direct investments carry the load? A reseller who advertises on your products is a partner. One who doesn't is a passenger.
Content and listing stewardship. Have they ever raised a listing quality issue with you? Flagged a suppressed ASIN? Asked about A+ Content? Suggested a variation structure improvement? Sellers who care about the long-term health of your listings ask these questions. Sellers who are optimizing for short-term sales don't.
Communication quality. When they reach out, what are they communicating? Constructive market intelligence, including competitive observations, pricing feedback, and demand signals, or requests that benefit them? The content of a reseller's communication tells you what they're actually optimizing for.
Compliance history. How many MAP violations have they accumulated? How quickly do they correct when notified? A reseller who violates MAP and corrects immediately is different from one who violates repeatedly and corrects only under threat. Compliance history is a measure of respect for the relationship, not just the policy.
What a scored seller relationship looks like
When you apply a scoring framework, the picture that emerges is usually different from what the relationships suggest.
Jim, who's been selling your products since the beginning, often scores mediocre, not because he's a bad person, but because he's been coasting. He knows your account team. He sends a holiday card. He calls when there's a problem, specifically when it threatens his position. He doesn't advertise. He carries eight of your SKUs. He's had four MAP violations in the last eighteen months.
Joan, who you added recently, scores well. She added your full catalog within sixty days. She's running sponsored products on your top ten ASINs. She flagged a listing suppression issue before your team noticed it. She asked about A+ Content enrollment last month. She's had one MAP violation, corrected within 24 hours.
Jim's relationship history feels like it matters. Joan's performance data says something different. A brand that manages by relationship will protect Jim. A brand that manages by data will invest in Joan, and have a direct conversation with Jim about what changes are needed to keep his position.
Both are fair outcomes. Only one is based on what actually serves the brand.
What this requires from you
None of this works if the brand manager running the Amazon channel believes the platform is simple. That belief is the root problem, because it leads to a posture of passive delegation rather than active management.
Amazon is not simple. It is learnable, manageable, and controllable, but only by people who take the time to understand how it actually works, what the standards should be, and what they have the right to demand from the people selling their products on it.
The resellers who thrive under passive brand management are almost never your best performers. They're your best communicators. And those are not the same thing.
Build the scoring framework. Run it quarterly. Have the performance conversations it surfaces. Make clear to every reseller in your network that the relationship is valued, and that it's also evaluated.
The sellers who are actually delivering will welcome that conversation. The ones who resist it are telling you something important about why they want you to stay in the dark.