One measurement · seconds

Registered is not the same as uncontested

Brand Registry tells you a brand can be defended. It does not tell you who is selling under it today — and those come apart more often than the paperwork suggests.

This is one page, on one question: every account we can see carrying the brand, its storefront, its registered owner, and how deep each one's carriage runs. Taken from Amazon's own offer data — so it is not the seller's word for anything, and you can check every line of it yourself.

Two live readings — this is the page you get

SpaceAid

Sole presence

One account carries it, and that account is the brand's own. This is what a brand owner looks like from the outside.

Open the reading

Tamiya

Shared presence

207 accounts carry it, 136 of them seen offering in the last month. A well-known brand that anyone may resell.

Open the reading

Neither reading is a criticism of anyone. The pair is here because one reading proves the tool runs and two prove it discriminates. You can re-run either against Amazon yourself — which is the point: it is worth more than anyone's word for it, including ours.

How often does it matter?

We sampled 100 Amazon brands across five categories and counted the accounts carrying each one:

48%
carried by exactly one account
81%
by five or fewer
2
median accounts per brand

Excluding national brands. So the answer on any given target is close to a coin flip — which is exactly why it is worth asking, and why a seller saying “I'm the only seller” is not an answer.

Method: rank-banded sampling, one seller census per brand, September 2026. The census sees an account's ten largest brands, so every count is a floor and 48% is an upper bound.

What this is not

  • Not a recommendation on the deal. We report what the offer data shows and stop. Whether to proceed needs financials, legal and reputation — none of which is ours.
  • Not proof of ownership. Sole presence is consistent with a brand owner. It is not the same as the trademark register, and it does not replace it.
  • Not a valuation, a QoE, or full diligence. It is one question, answered well, early and cheaply.
  • Not complete on a very broad reseller. Amazon's index returns an account's ten largest brands, so a wide catalogue comes back partly visible. We report what was measured and say so when something wasn't.

One brand · $29

Name the brand as it appears on Amazon. The reading reaches you by email within a minute, and the page opens as soon as it is ready. No account to create.

Check one brand

Five brands · $99

Screening a shortlist. Spend them on targets you pick later — and five checks costs less than one full report on one of them.

Get five

Past the channel question, a full pre-LOI assessment ($149) reads the whole structure — concentration, trajectory, catalogue quality, and what a new owner could fix and on what horizon. Most buyers want this one first.

Werner Heigl · ZSell Vision · werner@zsell.ai
Questions about the method are welcome, and answered by the person who built it.