Deal verdict
The Sealy Duchess Contract Mattress is the better deal today.
It is at its usual price, while the Dormeo Fresh Deluxe Memory Foam Mattress has been cheaper. The Sealy Duchess Contract Mattress costs £30 less today.
Mattress Online
Usual price
£709 Double
£709 is the usual price. You can safely ignore any countdown timer. It's been £709 or less for 100% of the 65 days we've tracked.
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Dormeo
Worth waiting
£739 Double · Memory foam
It's been cheaper. It was £359 on 12 Nov 2026. It's been £739 or less for 100% of the 155 days we've tracked.
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| Sealy Duchess Contract Mattress | Dormeo Fresh Deluxe Memory Foam Mattress | |
|---|---|---|
| Firmness | Medium firm | Medium soft |
| Warranty | 5 years | 15 years |
| Mattress type | Not stated | Memory foam |
| Sizes | Single, Double, King, Super King | Single, Double, King, Super King |
Specs are the figures each retailer publishes. Prices are for the size shown above.