01What Amazon Just Clarified

Finding another seller on your Amazon listing is one of the most common reasons sellers panic. The price is lower, the Buy Box is gone, and sales drop overnight. Most sellers assume it’s a hijacker. Sometimes it is. Often it isn’t.

Amazon’s own staff recently posted a guide in the Seller Forums to settle this. The message was simple: a new seller on your page is not automatically a problem, but there are specific situations where you should act. The post also triggered a sharp question from a seller about Letters of Authorization, which an Amazon moderator then answered.

This article breaks down both. You’ll learn how to tell which situation you’re in, what to report, what evidence to collect, and what to do when reporting isn’t an option.

02Why Other Sellers Can Join Your Listing

Amazon is an open marketplace built on one rule: one product, one page. When several sellers offer the same item, Amazon groups all their offers on a single product detail page. Shoppers compare price, delivery, and seller rating in one place.

That means you don’t own the listing, even if you created the ASIN. You own your offer on it. Any seller who has the same genuine product is expected to list on that same page instead of creating a duplicate.

This is also why a new seller can win the Buy Box overnight. Amazon chooses one offer as the Featured Offer. If the newcomer is cheaper, ships faster, or has stronger metrics, they can take it, and your sales drop even though your product and page didn’t change.

03When Another Seller Is Allowed

According to Amazon’s post, if another seller is offering a genuine version of the same product, that is permitted. Amazon states plainly that rights holder authorization is not required to sell on Amazon.

In practice, this usually means one of these:

• A retailer or wholesaler bought your product through normal channels and is reselling it.
• One of your own distributors started selling on Amazon without telling you.
• A seller bought discounted stock, clearance units, or liquidation lots and is reselling them.

None of these break Amazon’s rules on their own. If the product is genuine and identical, reporting the seller won’t remove them, and it can backfire (more on that in section 09). Your options here are commercial, not legal: compete, or fix your distribution so fewer units leak out.

04How to Compete When You Can’t Remove Them

If the other seller is legitimate, Amazon’s advice is to compete on value. That breaks down into three things you control.

1. Price competitively, but know your floor. Matching a lower price only makes sense if you still make money. Work out your real margin first, including fees and ad spend, before you touch the price.
2. Keep your seller metrics strong. Order defect rate, late shipment rate, cancellations, and stock levels all feed into who wins the Featured Offer. Going out of stock hands the Buy Box to your competitor.
3. Keep your product information accurate. A clean, correct listing helps conversion no matter who holds the Buy Box. Our product title optimization guide covers how to structure titles under the current rules.

There is also a longer-term fix outside Amazon. If your product keeps showing up from unknown resellers, trace where the stock is coming from. Tighter distributor agreements, minimum advertised price policies, and fewer wholesale accounts often solve the problem at the source.

05When It’s Not Allowed: Fake or Different Products

The picture changes if the other seller’s product is counterfeit or materially different from yours. Different packaging, missing parts, a different model, or a lower-quality copy all count. Customers think they’re buying your product, get something else, and leave bad reviews on your page.

Amazon lists two ways to report this:

• Report a Violation tool — available if you’re enrolled in Brand Registry.
• Account Health Dashboard — under “Report abuse of Amazon policies,” available to all sellers.

Amazon says you’ll need three pieces of information: the Order ID, details of how the product you received differed from yours, and any previous complaint IDs.

Keep your reports factual and specific. “This is fake” is weak. “Received unit has no batch code, different barcode, and a missing accessory compared with our genuine product (photos attached)” gets taken seriously.

06When Someone Changes Your Listing

Because the page is shared, other sellers can submit changes to it too. If another seller has altered your title, images, or brand name, Amazon says to report it immediately using the same paths above.

You can also use the suggest changes option on the product detail page to request the correct information. Save screenshots of the page before and after the change. Those make your case much easier to prove.

07When Someone Misuses Your Brand Name

If a seller is using your brand name without permission, for example on their own products or in their own listings, Amazon says Brand Registry provides the strongest protection.

Once enrolled, the Report a Violation tool lets you search Amazon by text and by image to find listings misusing your brand or your photos. That is far faster than hunting through search results one product at a time.

TOOLFree GlancePeak Tools for This Situation

When a reseller joins your listing, the first real decision is financial: do you match their price, or hold? These free tools help you answer that with numbers instead of guesses. No signup, no card.

08The Letter of Authorization Question

The most useful part of the forum thread came from a seller reply, not the original post. A seller pointed out the obvious contradiction: if authorization isn’t needed to sell, why is a Letter of Authorization (LOA) from the brand owner one of the first things Amazon asks for when a complaint is filed?

An Amazon moderator replied that these are two separate situations:

In other words, the LOA is not a license to sell. It’s a way to prove your use of someone else’s intellectual property is authorized when Amazon has a reason to doubt it.

Not everyone was convinced. At the time of writing, the seller’s question had more upvotes than the moderator’s answer, which had collected only downvotes. That reflects what many resellers experience: LOA requests often land on sellers of genuine goods, and the line between “selling” and “using a trademark” feels thin.

09Five Mistakes That Make It Worse

10Brand Registry: Your Long-Term Protection

Amazon calls Brand Registry the single most impactful step a brand owner can take. If you haven’t enrolled, it gives you:

• More control over product pages that use your brand name.
• Proactive protections that find and remove bad listings automatically.
• Access to Transparency, Amazon’s unit-level code program that helps stop counterfeits before they ship.

To enroll, you need an active registered trademark with an accepted office. For US sellers that’s usually the USPTO. Amazon’s post, written for the UK marketplace, names the UK Intellectual Property Office. Brand Registry won’t stop genuine resellers, but it makes every other situation in this guide much easier to handle.

11Your Action Checklist

Next time you spot another seller on your Amazon listing, work through this in order.

1. Don’t react yet. Screenshot the listing, the other seller’s offer, and their storefront.
2. Do a test buy. Compare what arrives with your genuine product.
3. Genuine and identical? Check your margin, then compete on price, stock, and metrics.
4. Fake or different? Report it with the Order ID, the differences, and any earlier complaint IDs.
5. Listing changed? Report it and use suggest changes to restore the correct details.
6. Brand misused? Use Brand Registry’s Report a Violation tool.
7. Not in Brand Registry? Register your trademark and enroll. It’s the best long-term fix.