The morning you find out
You log into Seller Central, check your hero ASIN, and the offer count is no longer 1. There are 3 sellers. Two of them are familiar — your authorised distribution partners. The third is a name you do not recognise. Their price is six percent below your MAP. They have the Buy Box.
Welcome to the most common, most undertaught operational problem in independent-brand marketplace strategy.
Why this is happening
Unauthorised resellers exist because someone in your distribution chain sold inventory below their wholesale price to recover cash, dump excess stock, or chase a short-term margin opportunity. The unauthorised reseller bought that inventory, listed it on your Amazon ASIN, and is now collecting the difference between what they paid and what they sell at.
The mechanics are perfectly legal under the U.S. first-sale doctrine: once your distributor legally sold the goods, the buyer can resell them. The reseller is not violating your trademark by selling authentic product. They are not committing a crime. They are arbitrage.
Why Amazon will not help directly
Amazon has zero interest in adjudicating reseller disputes. Their priority is the shopper, and the shopper benefits from competitive offers and lower prices. Calling support and saying "this seller is not authorised" produces a polite reply that Amazon does not enforce distribution agreements.
The two paths Amazon DOES support:
1. Counterfeit reports through Brand Registry. If the seller is selling actual fakes (different lot numbers, missing serials, packaging variations), this works fast — usually 24-48 hours to remove. But if the product is genuine first-sale-doctrine arbitrage, this report will be rejected and you risk a Brand Registry warning for false reporting. 2. MAP violation reports, with a published MAP policy. Amazon will not enforce MAP for you, but they accept brand-owner takedown requests for listings that materially misrepresent your product or terms.
Beyond those two, the path is operational, not platform-driven.
The operational playbook that actually works
Step 1: Trace the supply. The single most useful thing you can do is figure out which of your distributors leaked the inventory. We do this by buying the unauthorised offer ourselves, taking delivery, and reading the lot codes. Lot codes trace back to manufacturing batches and shipment manifests. Within a week you usually know which distributor is the leak.
Step 2: Cut off the leak. This is the hardest step because it usually means terminating a distributor relationship that is otherwise profitable. The math: a distributor who leaks one pallet per quarter to grey market is costing you 3-7 percent of your Buy Box win rate, which translates to substantially more revenue loss than the distributor's purchases produce.
Step 3: Cease and desist with documented chain. Once you know who is reselling, your IP counsel sends a cease-and-desist letter that documents the chain — distributor name, manufacturing batch, your published MAP, the unauthorised listing. Most arbitrage resellers will move to a different brand rather than fight a documented case. The ones who don't are typically running larger operations and need a different approach (see step 5).
Step 4: Saturate the channel with your authorised offer. While the legal process plays out, you increase the volume your authorised seller is shipping to FBA on the affected ASINs. The arbitrage reseller has a finite inventory pool from the leak. You can outlast them by simply being the dominant in-stock offer for the next 60-90 days.
Step 5: Last resort — Transparency program. For high-value ASINs that get hit repeatedly, Amazon's Transparency program lets you serialize every authentic unit at the manufacturing line. After enrollment, FBA receiving will reject any unit without a valid serial. This effectively kills counterfeit and arbitrage on Transparency-enrolled ASINs. The cost is operational at the manufacturing line.
The wholesale-partner alternative
What we do at Exact Sales for our brand partners is collapse this entire playbook into a single operational responsibility. We become the authorised seller on Amazon, you sell to us at wholesale, and we own the work of detecting unauthorised offers, tracing the leak, sending the C&D, saturating with authorised inventory, and (where it makes sense) running Transparency enrollment.
The brands we work with see Buy Box win rate move from the 30-50 percent range to 90+ percent typically within a quarter. The MAP discipline that comes with a single authorised seller is the underlying reason.
If you have unauthorised sellers on your listings right now, the path forward is not a stronger letter. Talk to us about whether the wholesale partner model fits your brand.