How Ignoring Unauthorized Resellers on Amazon Erodes Your Brand

For the first time in our annual Amazon B2B Industry Pulse Survey, unauthorized resellers ranked as the top challenge cited by B2B manufacturers, surpassing even price erosion, which is caused by unauthorized resellers. This is a major obstacle for brands that want to preserve brand integrity, maintain control of their pricing in the marketplace, and deliver consistent customer experiences.

Source: 2026 Amazon B2B Industry Pulse Report

Amazon has become the dominant product search engine for both consumers and business buyers, often making it ground zero for how your brand is perceived, priced, and purchased. But when opportunistic third-party sellers sell a brand’s products, they typically compete on price. The result is often major brand dilution, as well as angry channel partners who are being undercut. 

Yet many B2B manufacturers have been slow to respond to the unauthorized reseller problem, allowing it to quietly undermine years of building brand equity. And ignoring this problem only allows it to grow.

The good news is that brands can take control of this situation. Addressing it effectively requires a committed, multi-faceted approach, and the companies that take it seriously are seeing real results.

Why Unauthorized Resellers on Amazon Are a Growing Problem

Part of the reason this happens is that Amazon's marketplace is fundamentally designed to drive competition on products. The platform makes it remarkably easy to become a seller, requiring only an address, a credit card, and a basic verification process. Seller Central (3P), the third-party approach to selling on Amazon, is designed to be self service, which makes it just as accessible to bad actors as it is to legitimate ones.

In fact, Amazon has embraced third-party resellers, which now account for more than 60 percent of all units sold on Amazon.

Unauthorized resellers are typically small, opportunistic companies with little interest in supporting the products or brands they sell. Typically, they don't offer the service, maintenance, or technical support that authorized distributors provide. Resellers’ only competitive lever is price, which creates constant downward pressure on your retail price and margins. Amazon's own buying behavior can compound this further. When Amazon purchases and resells products directly through its 1P program, it will match the pricing of unauthorized third-party sellers, further accelerating the erosion.

The downstream consequences reach beyond pricing alone. Unauthorized resellers often post inaccurate or misleading product information, and many will “game the system” by creating duplicate listings specifically to avoid competing head-to-head with other sellers on the same product.

The result is a fragmented, inconsistent brand presence that erodes customer trust and creates friction with your authorized distribution partners, who are left competing against sellers that undercut them on price while offering little or none of the value they bring. For brands that don't have strong channel controls in place, Amazon exposes this weakness at scale, across thousands of product listings, in front of millions of buyers.

How Brands Can Fight Back against Unauthorized Resellers

Here at Enceiba, we’ve worked with many B2B brands to tackle unauthorized resellers and correct the issues that stem from them. In our experiences, there is no silver bullet for addressing unauthorized resellers. Instead, it takes a coordinated, multi-faceted approach.

Following is our four-part framework we have developed while working with clients on this key issue.

1. Build a Legal Foundation

The starting point is protecting your intellectual property. This means ensuring your brand's word mark and logo are properly trademarked, giving you the legal rights to enforce your brand in the marketplace. The good news for U.S.-based manufacturers is that there are strong legal tools available to protect your intellectual property on Amazon, but they are only accessible if that foundation is in place first.

2. Define Your Distribution Channel Strategy

From there, brands need a clear framework governing who is authorized to sell their products, where, and under what conditions. This is typically codified through Internet Selling Policies and distribution agreements that explicitly outline the rights and limitations of your resellers and distributors. These can be paired with a Minimum Advertised Price (MAP) policy, which governs the prices at which your products can be publicly advertised, including on Amazon.

That said, a MAP policy may not even be necessary if your distribution channel is well-governed. When you control who is selling your products and those sellers compete on value rather than price, pricing tends to take care of itself.

3. Use Amazon's Own Tools

Amazon offers several tools that can support your efforts. Brand Registry is an important one, allowing you to consolidate duplicate listings and assert ownership over your product catalog. If a reseller creates a separate listing for your product to avoid competing with other sellers, Brand Registry gives you the means to address it. Amazon's Transparency program, which is designed to address counterfeit and knockoffs on the platform, offers an additional layer of protection worth exploring. 

4. Enforce Proactively and Consistently

This is where many brands fall short. Monitoring who is selling your products is essential, and tools like Trackstreet and consultants like Enceiba can help identify unauthorized sellers in real time . But monitoring without action accomplishes little. The most effective brands proactively reach out to unauthorized resellers to have listings removed, and they are prepared to take legal action when necessary. They also make the difficult but necessary decision to stop selling to distributors who are causing disruption in the channel by selling products to unauthorized resellers.

The results of taking this type of approach can pay major dividends. For example, one Enceiba client is a large plumbing manufacturer, for whom we developed a structured enforcement program. Taking our approach, this client has achieved a 95 to 97 percent Buy Box win rate, eliminated hundreds of unauthorized resellers, and now generates over $25 million in annual Amazon sales with full price control and virtually no channel conflict.

A Final Note: Taking Control Requires Commitment from the Top

It’s important to understand that a brand protection program like this does not succeed without senior leadership alignment and support. Sales, operations, and legal teams all need to be on board, and that buy-in has to come from the top. Unauthorized resellers thrive when a brand’s enforcement is weak and inconsistent. But when leadership is committed, we’ve seen the results follow.

The reality is that unauthorized resellers will not go away on their own. Brands that treat this as a strategic priority rather than a background inconvenience will be in a better position to protect their margins, their partners, and their reputation on the platform that now drives more product search than anywhere else.

If your organization is ready to take control of your brand presence on Amazon, Enceiba can help. Contact our Amazon specialists to learn how we work with B2B manufacturers to identify unauthorized resellers, build enforcement programs, and protect their channels for the long term.