A good buying decision needs more than a promotional label. This guide explains the checks we use and the limitations a reader should keep in mind.
Start with the price people actually paid
A crossed-out price can be useful context, but it does not prove that today’s offer is unusually good. Our first comparison is the product’s recent selling-price pattern on Amazon UK. If an item spends most weeks near £80, a drop from a displayed £120 reference price to £78 is only a small improvement, not a dramatic bargain.
We look for a meaningful gap beneath that recent pattern. The size of the gap matters, but so does its reliability: a longer, steadier history gives more confidence than one isolated observation. When the history is incomplete, the deal should be labelled uncertain rather than promoted with false precision.
Check the exact product elsewhere
A deal also needs to make sense against the wider UK market. That comparison must use the same model, capacity, colour, bundle and condition. A cheaper listing for last year’s model or an open-box unit is not a fair benchmark for a new current-generation product.
Delivery charges, included accessories and the seller’s identity can change the real comparison. We therefore record the evidence behind a market price rather than treating the lowest search result as automatically equivalent.
Value is more than the discount
A low price is less persuasive when the product has persistent quality concerns, a weak seller trail or a replacement model is already better value. Ratings and review volume are supporting signals, not a substitute for reading what buyers report. We also distinguish an Amazon payment option being observed from a customer being eligible for it.
Our strongest verdict is reserved for offers that are below both recent Amazon pricing and a matched UK-market price, with enough evidence to identify the item confidently. Anything less belongs in a watchlist or a manual-review queue—not in a ‘best deal’ banner.