The rule: 30% off Amazon's own price, no exceptions
A deal qualifies the moment it clears one bar: at least 30% off Amazon's own listed price, right now. Nothing else about the product decides whether it shows up.
It is a single mechanical test, run the same way against every listing that comes through the feed. A £9 phone case and a £900 laptop are judged on the exact same percentage, not on how good the deal "feels". There is no manual curation, no editorial picks, and no sponsored placement that moves a listing past the bar or gives it a pass it has not earned.
Where the price actually comes from
Every deal comes from a live feed, the Canopy API, pulling current UK Amazon listings. Nothing on this site is a static list someone typed up once.
That means the price and the percentage off you see are read straight off Amazon's own listing at the point the feed is checked, not a screenshot from weeks ago or a number carried over from an old promotion.
What counts and what doesn't
The table below is the whole test. If a listing sits in the left column, it is on the site. If it only sits in the right column, it is not, no matter how the retailer markets it.
| Counts | Doesn't count |
|---|---|
| A live Amazon UK listing at least 30% below Amazon's own price, right now | A discount under 30%, however it is marketed |
| Any category that clears the bar, from tech to health to books | A pick chosen by a person because it looks like a good deal |
| Any listing, whether or not it earns us a commission | A deal that has already been shown once, reappearing as if it were new |
Categories filter what already qualified, they don't decide it
The category tag on each deal, Tech & Electronics, Health & Personal Care, and so on, only filters what a visitor sees. It never decides whether a deal gets on the site in the first place.
Each new deal is first sorted into a category by an automated keyword classifier, then every one of those assignments gets a human check before it ships, correcting the classifier's occasional wrong guess. That review only ever moves an already qualifying deal between buckets. It never questions whether the deal qualified in the first place, because the 30% test already settled that before the category was even assigned.
A deal that's been shown once doesn't come back as "new"
Once a specific deal has appeared on ThirtyOff, it is recorded permanently. If that same deal turns up again in the feed later, it will not be flagged as a fresh find a second time.
That stops the same discount being re-presented to you as if it were something new. It is a separate mechanism from how long a live deal stays on the site once it has qualified, see why deals disappear after 14 days for that part.
The affiliate link doesn't change what gets shown
ThirtyOff carries real Amazon Associates affiliate links, disclosed on our Privacy and Terms pages. That relationship has zero influence on which deals qualify.
The same mechanical 30% test applies regardless of whether a listing earns us anything. A listing that pays nothing is treated exactly the same as one that does, because the test runs before commission ever enters the picture.
No forms, no picks, no account
There is no sign-up, no email capture, and no manual "editor's choice". The whole site is generated from one feed and one rule.
Every deal on the homepage right now cleared this exact bar to get there.