How BuySignal tracks prices

BuySignal lists deals from UK and Canadian retailers. Next to the retailer's own price and discount, we keep our own daily record of each product's price. Some deals carry a label based on that record. This page explains exactly what each label means, how we measure, and what we don't check.

What we record

• One price per product per day. For every product we track, we keep one recorded price per day: the price shown in the retailer's listing at our daily snapshot.
• Since when. UK prices since 12 June 2026. Canadian prices since 16 September 2026.
• No guessing. If we couldn't record a price on a given day, that day stays empty. We never fill gaps with estimates.
• The listed price only. The recorded price is the price the retailer shows. It does not include delivery charges, member or app-only prices, vouchers, cashback or trade-in offers.
• We keep the history. We don't delete recorded prices.

"Lowest in 30 days", "Lowest in 60 days", "Lowest in 90 days"

We show this label when all of the following are true:

1. Today's price is the same as or lower than every price we recorded for that product in the last 30, 60 or 90 calendar days.
2. We recorded a price on at least 25 of the last 30 days (50 of 60, or 75 of 90).
3. Today's price is at least 5% below the previous price. The previous price is the most recent earlier price that we recorded on at least 7 separate days.
4. There is no gap of more than 3 days in our record around the price change.

"The same as or lower" means a price can share the lowest spot with an earlier day at the same price.

"Lowest in N days"

When we have between 15 and 24 recorded days in the last 30 calendar days, the label says "Lowest in N days". N is the number of days on which we recorded a price, not the number of calendar days. The other conditions above still apply. With fewer than 15 recorded days, there is no label.

When there is no label

• The price hasn't changed. A price that has stayed the same gets no label, even if the retailer shows it as reduced.
• Not enough history. We haven't recorded the product for long enough.
• The price has gone up, or has only just moved back down to where it was.
• Our check is out of date. We recalculate labels twice a day. A label is hidden if our check is more than 30 hours old, or if the price on the page no longer matches the price we checked.
• The retailer isn't covered yet. Labels are switched on one retailer at a time, after we check the quality of our record for that retailer. Canadian retailers will follow later.

"New" and "New price"

• New · Price tracking started. This is the first time we've seen this product at this retailer. We have no history for it yet, so there is nothing to compare against.
• New price. A product we already track is listed today at least 3% and at least £1 / $1 below the last price we recorded. We don't show a figure with this label.
• No label for price increases.
• How long it shows. UK: until the end of the UK day. Canada: for 24 hours.

We don't show "New" or "New price" when:

• a retailer changes most of its prices by the same percentage on the same day;
• more than 30% of a retailer's list appears as new at once;
• we started tracking that retailer less than 7 days ago;
• the listing is open-box, refurbished, renewed, pre-owned, used or marketplace (based on the product title).

The retailer's price and discount

The crossed-out price and "% off" shown on a deal are the retailer's own figures, shown as the retailer published them. We don't check the retailer's "was" price. Our labels are based only on our own record, so they can differ from the retailer's reference price.

How deals are ordered

By default, deals are sorted by the retailer's stated discount. Some days we also move a featured category or retailer higher up the list. No retailer pays for placement.

How BuySignal is paid for

BuySignal is paid for by its users through the Deals Hub and price alerts. We don't receive payment from retailers, and we don't use affiliate links at the moment. If that changes, we will say so on this page and in our Terms. Our labels will never depend on commission.

What we don't check

• stock levels or delivery times;
• delivery charges (prices shown don't include delivery);
• vouchers, member or app-only prices;
• the retailer's "was" price;
• how many units have sold;
• product condition, beyond what the listing title says.

BuySignal is not a retailer. Prices can change after our last check, so always confirm the price on the retailer's website before you buy.

Spotted a mistake?

Email [email protected]. We'll look into it and correct it.

Last updated: 10 October 2026