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The Playbook

How to Stop Unauthorized Sellers on Amazon (Step by Step)

Updated September 24, 2026

Key Takeaways

  • Amazon will not remove a seller just because you did not authorize them. Selling genuine, new products you did not approve is generally not a policy violation on its own.
  • Amazon removes violations, not competitors. Counterfeits, trademark misuse, wrong condition and listing abuse can be reported through Brand Registry. Unauthorized but genuine offers cannot.
  • The real fix is upstream. Unauthorized sellers get your inventory from somewhere. Trace it with test buys and lot codes, then close the leak in your distribution agreements.
  • Written policies give you leverage. An authorized reseller policy, a MAP policy and warranty terms tied to authorized sellers are what make enforcement stick.
  • Monitor every week. New sellers appear constantly. Brands that check seller count and price weekly fix problems in days, not quarters.

To stop unauthorized sellers on Amazon, identify each seller, buy from them to trace where their inventory came from, report any genuine policy violations through Amazon Brand Registry, and close the supply leak with written authorized reseller and MAP policies enforced through your distributors. Amazon will not remove a seller of genuine products just because you did not approve them.

This is the question manufacturers and brand owners ask us more than any other about Amazon. It usually starts the same way: a new seller appears, the price drops below the minimum advertised price (MAP), the Buy Box moves, and a retail partner calls to complain. Here is the step by step process we use, and an honest account of what works and what does not. If you are new to selling direct, start with Selling on Amazon as a Manufacturer.

What counts as an unauthorized seller on Amazon?

An unauthorized seller is anyone selling your products on Amazon whom you have not approved. That covers a wide range, and the type matters because each one needs a different response.

Type What it looks like Can Amazon remove it?
Counterfeiter Fake product on your listing Yes, through Brand Registry, once you prove it
Hijacker with the wrong product A different or knockoff item sold on your page Yes, as a listing or trademark violation
Seller of used or damaged goods listed as new Returns, open box or damaged stock sold as new Often, as a condition violation, with evidence from test buys
Diverted or grey market seller Genuine product that leaked from a distributor, retailer or closeout Usually not on its own; fix the supply chain
Your own distributor or dealer An account you sell to, listing online against your terms No; enforce your agreement with them

Most brands we see have a mix. Counterfeits get the headlines, but the biggest volume problem for manufacturers is genuine product leaking out of their own distribution. For listings that have been taken over outright, see our guide to protecting your brand from hijackers.

Why won't Amazon remove unauthorized sellers?

In the US, once a genuine product has been sold, the buyer can generally resell it. This is often called the first sale doctrine. Amazon's position follows from it: a seller offering genuine, new product in the condition it claims is not breaking Amazon's rules, even if the brand did not authorize them and even if they price below MAP. Amazon also does not enforce pricing agreements between brands and resellers.

Amazon Brand Registry does not change this. It gives you authority over your product pages and tools to report real violations. It does not give you a button to remove any seller you do not like. Filing false reports against genuine sellers can put your own account at risk, so do not treat the violation tool as a shortcut.

There is an important exception worth discussing with your lawyer. Products that are materially different from what you sell through authorized channels, such as items sold without the warranty, support or quality control that genuine authorized product carries, may not be treated as genuine in the legal sense. This is why many brands tie their warranty to purchase from an authorized seller. This article is general information, not legal advice.

How do you stop unauthorized sellers, step by step?

Step 1: identify every seller on every listing

  1. List every product you sell and find each one on Amazon. Include duplicate pages resellers created.
  2. For each listing, open all buying options and record every seller name, price, condition and whether they use Fulfillment by Amazon (FBA).
  3. Click into each seller's profile. Amazon shows a business name and address for sellers, which helps you match them to accounts you know.
  4. Flag which sellers are authorized, which you recognize as customers of your distributors, and which are unknown.

Step 2: make test buys and trace the inventory

Buy from each unknown seller. When the product arrives, record the packaging condition, lot or batch codes, date codes and any serial numbers. Compare those codes with your shipping records to see which distributor or retailer received that lot. Photograph everything, including the shipping label. This evidence does two jobs: it proves any condition or counterfeit claim to Amazon, and it tells you where the leak is.

If your products do not carry lot codes that trace to a customer, fix that first. Unique lot codes by distributor, or serialized labels on high-value products, are the single most useful change a manufacturer can make for channel control.

Step 3: report genuine violations to Amazon

Use the Report a Violation tool in Brand Registry for what Amazon does act on:

  • Counterfeit product, backed by test buy evidence
  • Trademark misuse, such as a knockoff sold on your page or your brand name used on another product
  • Copyright misuse of your own images or text on another listing
  • Used, damaged or returned goods sold as new

For brands with a counterfeit problem, Amazon also offers Transparency, which puts a unique code on every unit so only verified units can be sold, and Project Zero, which lets approved brands remove counterfeit listings directly. Both target counterfeits, not genuine diverted product.

Step 4: contact the seller

For genuine product sold without authorization, a direct, factual message is often enough, especially with small sellers who did not know your policy. Share your authorized reseller policy and MAP policy, explain which terms apply, and ask them to remove the offer. Keep it accurate. Letters that threaten claims you cannot support tend to get ignored or posted online, and they can create legal exposure for you. Have counsel review any formal cease and desist letter before it goes out.

Step 5: fix the supply chain

This is the step that actually ends the problem. Once test buys show where the inventory came from:

  • Talk to the distributor or retailer. Often they do not know one of their customers is selling online.
  • Enforce your agreement. If your terms restrict online sales or require approval, apply them consistently.
  • Adjust allocation. Limit volume or stop supplying accounts that keep leaking product.
  • Control closeouts and returns. Excess and returned stock sold to liquidators is a common source of below-MAP offers.

Step 6: become the strongest seller on your own listings

Sell direct through Seller Central at MAP, with stock always available through FBA. An in-stock brand with Prime shipping at a steady price is a hard seller to beat for the Buy Box, and every sale you make is one a diverter does not. Our Buy Box guide explains how Amazon picks the featured offer.

Want a full map of who is selling your products and where their inventory comes from? Our Growth Diagnostic is a full audit across Amazon, your own website, TikTok Shop and your other marketplaces, with a 90-day roadmap. For channel control it lists every seller on every listing, the price spread against MAP and the enforcement plan in order of impact. The cost is credited to your first month if we work together. Start with a conversation.

What should an authorized reseller policy include?

An authorized reseller policy sets out who may sell your products and on what terms. It is what gives your distributors a clear rule and gives you a basis for action. A typical policy covers:

  1. Who is authorized. Named accounts, and the approval process for new ones, especially for online and marketplace sales.
  2. Where they may sell. Whether online sales, marketplaces or specific marketplaces need separate approval.
  3. Quality and handling standards. Storage, handling, shipping and customer service requirements for your products.
  4. Warranty and support terms. Whether warranty coverage applies only to product bought from authorized sellers.
  5. Resale to other resellers. Whether authorized accounts may sell to other sellers, liquidators or exporters.
  6. Consequences. What happens when terms are broken, applied the same way to everyone.

Pair it with a written MAP policy. Our guide to MAP pricing on Amazon covers how to write and enforce one. Have an attorney draft or review both documents; the details depend on your agreements and state law.

How do you monitor for new unauthorized sellers?

New sellers show up all the time, so enforcement is a routine, not a project. The rhythm we use:

  • Weekly: seller count, lowest price and Buy Box owner on your top products, and any new duplicate listings.
  • Monthly: the full catalog, plus a review of which distributors' lots keep showing up.
  • Every time: any change to a listing you did not make. Check the change log in Seller Central, open a case and revert it. Never let an unauthorized change sit.

Automated monitoring helps at catalog scale, and we use our own tools for it. The response still has to come from someone who knows your distribution agreements.

What if unauthorized sellers keep coming back?

If enforcement stalls, escalate in this order: document every violation, send factual notices, report genuine violations through Brand Registry, investigate the supply source in more depth, and talk to counsel about further legal options. Brands that sell through many distributors sometimes also consolidate their online distribution, so fewer accounts are allowed to sell online at all.

If the seller turns out to be a legitimate, well-run business, the right move may be to authorize them, hold them to MAP and let them sell. The goal is a stable price and a clean listing, not zero other sellers. We discuss how this affects retail partners in Will Selling Direct on Amazon Upset My Retailers and Distributors?

We handle this work for brands as part of our brand protection service, alongside brand management and advertising. For a primer on the registry itself, read our Amazon Brand Registry guide.

Frequently Asked Questions

Can I get Amazon to remove unauthorized sellers?

Only if they are breaking an Amazon policy or your intellectual property rights, for example selling counterfeits, knockoffs on your listing, or used goods as new. Amazon will not remove a seller of genuine, new product just because you did not authorize them. For those sellers, the fix is in your distribution agreements.

Is it illegal to sell a brand's products on Amazon without permission?

Generally no. In the US, genuine products that were lawfully bought can usually be resold. There are exceptions, such as products that are materially different from the authorized version, and contract terms may bind your own distributors. Talk to a lawyer about your situation.

Does Amazon Brand Registry stop unauthorized sellers?

Not on its own. Brand Registry gives you control over your product pages and tools to report counterfeits and intellectual property violations. It does not let you remove sellers of genuine product.

How do I find out where an unauthorized seller gets my products?

Make a test buy, then record the lot, batch, date or serial codes on the product and packaging and match them to your shipping records. Unique lot codes by distributor make this much faster.

Does enforcing MAP remove unauthorized sellers?

No. MAP controls the price your authorized sellers may advertise. It gives you a reason to act against accounts in your own distribution that break it, but Amazon does not enforce MAP and will not remove a seller for pricing below it.