Good time to buy

Rock Hard Super Firm Foam Mattress £334 is a genuine low.

Today is the only day in the 63 days we've tracked it's been this cheap.

Where today's price sits

£334Lowest we've recorded, the same as today

£435Highest we've recorded, 13 Nov 2026

Prices before 14 Nov 2026 come from archived copies of Mattress Online's page, roughly one a month, so short sales in that period may not show.

Today's price is the lowest we've recorded.

We'll email you when the Double gets cheaper. One email per drop, and every email has a link to stop.

Price history for the past 63 days

£300£350£400£450£500 £334

Price “Was” price With a code

Prices before 14 Nov 2026 come from archived copies of the page, roughly one a month. From 14 Nov 2026 we check every hour.

When does the Rock Hard Super Firm Foam Mattress usually go on sale?

It showed a "was" price on 0 of the 1 days we've checked it every hour.

What's the cheapest price ever recorded for the Rock Hard Super Firm Foam Mattress?

£334 for the Double, on 14 Nov 2026. We've tracked it since 13 Sep 2026.

How often do you check the price?

Every hour, for every size. We keep every change, which is how we know what it usually costs.