How we compare

We collect prices from brand shops and UK retailers every night and convert each one to a price per 100g (or per 100ml), so packs of different sizes compare fairly.

Products are ranked by price per 100g. Commission never changes the order. Every price shows the shop it came from and when it was last checked; when a price changes, the old price stays in the product's price history.

Deals are shown only when the current price is below the shop's own regular price. Short-dated stock always shows its best-before date.