Last updated: October 2026
Every mattress website seems to be running a sale. Half price. 40 per cent off. Ends at midnight, except it ran last week too and will run again next week. If you have ever wondered whether a mattress discount is real, you are asking the right question, and the UK's advertising and competition regulators have been asking it as well. This guide explains how to tell a genuine reduction from a decorative one, what the rules say, and how REM-Fit prices its mattresses.
Quick answer: A mattress discount is only real if the "was" price is a price the mattress actually sold at for a meaningful time. If a brand is on sale every time you look, the sale price is the real price and the crossed-out figure is a marketing device. Check the price over a few weeks, ignore countdown clocks, and treat a 40 per cent reduction with the suspicion it deserves. REM-Fit does not inflate its list prices, which is why our occasional sales are modest and our everyday price is the price.
How do you tell if a mattress sale is genuine?
A genuine sale has a before and an after. The mattress sold at the higher price, enough people paid it, and now it costs less for a limited period. A fake sale has only an after: the higher price exists to be crossed out.
Four checks tell the two apart:
- Watch the price for a month. If the "sale" never ends, or ends on Sunday and restarts on Tuesday, the discount is permanent and the discount is the price.
- Look at the size of the reduction. Mattresses are not a high-margin product once springs, foam, delivery and a 100-night trial are paid for. A brand that can afford 40 or 50 per cent off every week has priced the list figure to make that possible.
- Ignore the countdown clock. A timer is only meaningful if the offer actually stops when it reaches zero. Many do not.
- Be wary of "only three left" and "12 people are viewing this". Demand messages are easy to generate and hard to verify, and they exist to hurry you.
None of this means you should avoid sales. It means a sale is a reason to check the price history, not a reason to skip checking.
What do the rules say about "was" prices and countdown timers?
UK consumer law requires a reference price, the crossed-out "was" figure, to be a genuine price, and bans urgency claims that are not true. Two regulators enforce this: the Advertising Standards Authority, which rules on adverts and websites, and the Competition and Markets Authority, which can take companies to court.
Both have been busy in the mattress market. Between 2022 and 2026, two of the biggest bed-in-a-box brands in the UK (we shall not name them, for fear of a catty response from one and a swift one from the other) had rulings or undertakings against them over exactly these practices:
- In 2022 the ASA upheld complaints that one brand's savings claim used a reference price it could not show was the usual selling price, that a countdown clock promoted a sale which "was not actually time-limited", and that a Black Friday promotion gave no start or end dates.
- In 2024 the ASA ruled that the other brand's crossed-out prices and "40 per cent off" claims were misleading, because the evidence did not show the higher prices were its usual prices. The complaint was brought by the first brand, which tells you something about the market.
- Later in 2024 that second brand gave the CMA formal undertakings to ensure any "was" price is genuine and that countdown clocks are clear and do not falsely suggest customers must act quickly.
- In May 2026 the first brand admitted in the High Court that it had broken consumer law with misleading countdown timers, false "high demand" messages and false discount claims, and gave court-enforceable undertakings to stop.
One part of that last case is still unsettled. In July 2026 the High Court decided that a low proportion of sales at the higher price is not, on its own, enough to make a "was" price misleading, and declined to impose the fixed sales ratio the CMA had asked for. The law on reference prices is therefore still being worked out, which is a good reason to rely on your own price checks rather than on the regulators catching every case.
The sources for all of the above are listed at the end of this post. We would rather you read them than take our word for it.
How does REM-Fit price its mattresses?
We set the list price at what the mattress is worth, and we sell it at that price most of the year. That one decision explains everything else about how our pricing looks.
It means our sales are occasional rather than permanent. When we run one, it is a real reduction from a price people have been paying, it has a start and an end, and the price goes back up afterwards. It also means our reductions are modest. You will not see 40 per cent off a REM-Fit mattress, because there is no inflated figure to take 40 per cent from. A brand that can discount by half every week was never charging full price in the first place.
And it means no theatre. No countdown clocks that reset, no "only two left" when the warehouse is full, no sale that is somehow always on. If you see a REM-Fit price today, it is the price, and if you come back in a month it will most likely be the same price.
What you get for it is the same every day of the year: a 100-night home trial (200 nights when you add a protector), a 15-year guarantee, free UK delivery and 0% finance. The 3000 Supreme, our medium-tension hybrid, is a fair example: 3000 dual-layer pocket springs under open-cell memory foam at a price that does not need a crossed-out figure beside it to look good.
REM-Fit 3000 Supreme Hybrid Mattress
Medium 6/10: 3000 dual-layer pocket springs under open-cell memory foam, at a price that is the price.
Shop the 3000 Supreme✓ 100-night trial (200 with a protector)✓ 15-year guarantee✓ Free UK delivery✓ 0% finance
Is Black Friday a good time to buy a mattress?
It can be, as long as you apply the same checks. Black Friday is when the biggest reductions appear, and also when the most inflated "was" prices appear to make those reductions look bigger. A 50 per cent Black Friday saving on a mattress that was 40 per cent off in October is a 10 point change dressed up as a bargain.
The better approach is to decide what mattress you need first, using our guide to how to choose a mattress, then compare the real prices on the shortlist. A trial period matters more than the sale date, because a mattress that is wrong for you is expensive at any discount. Our best mattress UK guide covers value across the market, and every mattress in our hybrid mattress collection carries the same trial whether you buy it in a sale or not.
Mattress pricing questions answered
Last updated: October 2026
When is the best time to buy a mattress?
When you need one. Genuine reductions do appear around Black Friday, bank holidays and January, but the difference is smaller than the adverts suggest once inflated reference prices are stripped out. A brand with honest everyday pricing gives you most of the benefit on any day of the year, with a trial period to protect you if the mattress is wrong.
Why are mattresses always on sale?
Because for some brands the sale price is the real price and the list price exists to be crossed out. A permanent discount is a pricing structure, not an offer. If a brand has been "on sale" every time you have checked over a month, read the lower figure as the price and judge the mattress on that.
Is a 40 per cent off mattress deal real?
Occasionally, for clearance of an old model. As a regular offer it usually means the full price was set with the discount in mind. The question to ask is how many people paid the higher price, and for how long, which is exactly the question the ASA and CMA have been asking mattress brands since 2022.
What is a reference price?
The crossed-out "was" or RRP figure shown next to a sale price. Under UK consumer law it must be a genuine price the product sold at, not a figure chosen to make the saving look large. In July 2026 the High Court ruled that a low proportion of sales at the reference price is not by itself proof the claim is misleading, so the exact test is still being settled; a brand's whole pricing pattern over time is the better guide.
Does REM-Fit ever run sales?
Yes, occasionally, with a real start and end and a return to the everyday price afterwards. Our reductions are modest because our list prices are not inflated. The trial, guarantee, delivery and finance terms are the same whether you buy in a sale or not.
Sources: ASA ruling, 16 March 2022; ASA ruling, 6 March 2024; CMA, 1 August 2024; CMA, 28 May 2026; Lewis Silkin on the High Court judgment of 30 July 2026.
