How we check Black Friday prices

A discount only means something if you know what the product cost before. So we keep our own price log instead of trusting a retailer's "was" price.

What we track

For each product on this site we record the price at every UK retailer that lists it on Google Shopping, once a day, starting on 8 November.

How we judge a deal

Our reference price is the lowest price we logged for that product at that retailer between 8 November and 14 November. Then:

• Real discount: today's price is at least 5% below the reference price.
• Same as early November: within 5% below to 2% above the reference price.
• Pricier than early November: more than 2% above the reference price.
• Not enough history: the retailer only started listing it after our reference week.

When a retailer shows a "was" price more than 5% above the highest price we ever logged, we flag it next to the deal.

Limits

Google Shopping prices can differ from the price on the retailer's own site, and prices change during the day. Always check the price at checkout. Delivery costs are not included unless we say so.

Affiliate disclosure

Some links on this site are affiliate links: if you buy through them, the retailer may pay us a commission. It costs you nothing extra. Commission never changes our verdict, which comes only from the price log described above. Links that may earn us money are marked as sponsored.