Double ÉveilThe 1,000-review test: is your product in a saturated market?
A product can have a great margin and still be impossible to sell, because others already take all the room. Our competition test is free, takes five minutes and runs on Amazon. It's filter 3 of our method.
The method in 4 steps
- Go to Amazon.com (US) or Amazon.co.uk (UK) and type the product's generic name, the way a shopper would.
- Ignore sponsored results.
- Among the first 16 results, count those with more than 1,000 reviews.
- Read the verdict.
| Results with over 1,000 reviews | Verdict |
|---|---|
| 0 to 3 | There's room |
| 4 or more | Locked market |
Our method
This threshold is a rule of thumb from our tests, not a law. It stops you from running into a wall; it doesn't guarantee that an open market will sell.
Two real cases
- No-tie shoelaces: 13 offers out of 16 have over 1,000 reviews. Locked market.
- Radiator reflector: about half of the first 16 results have 600 to 1,300 reviews. Even below the threshold for some, too crowded for a newcomer.
Measured on Amazon.fr in September 2026: redo them on your own marketplace before relying on them.
Why it works
A product with thousands of reviews enjoys trust a new shop doesn't have, often with a lower price and delivery in 1 to 3 days. On TikTok, the video creates the desire, but the buyer compares.
Going further
To see how many creators already promote a product on TikTok Shop, a TikTok Shop data tool answers the question.
FastMoss affiliate link
What for: TikTok Shop data: rising products, creators, shops and the videos that sell.
When: As soon as you look for products. Start with the free plan or the trial.
Open FastMoss (affiliate link)Key point
A locked market isn't an opportunity, it's a wall. Look for the niche the big players don't cover.
FAQ
Why use Amazon for a TikTok Shop product?
Because the number of Amazon reviews is a free, visible measure of how entrenched competitors are in your country.
Should I count sponsored results?
No. Count only the first 16 non-sponsored results.
What if the market is locked?
Change angle (a variant, a specific audience) or change product. Don't try to go head-on.
Official sources
From reading to doing
The Double Éveil course is free: short missions with a checklist and a quiz at each step. Adults (18+) only.
Our method: this lesson relies on TikTok Shop's official pages and public guidance, checked on the dates shown. Rules change: Seller Center and the TikTok app are the final word. This is neither legal nor tax advice, and no earnings are promised. Some links are affiliate links, always labelled: if you subscribe through them, you pay nothing extra and we earn a commission.