Compare Silentnight Extra Firm Miracoil Cushion Top Mattress vs Sealy Alford Advantage Mattress: price history and specs

Deal verdict

Both have been cheaper. It's worth waiting on either.

The Silentnight Extra Firm Miracoil Cushion Top Mattress costs £1 less today.

Mattress Next Day

Silentnight Extra Firm Miracoil Cushion Top Mattress

Worth waiting

£313 Double · Open coil

It's been cheaper. It was £299 on 14 Nov 2026. It's been £313 or less for 100% of the 69 days we've tracked.

£295£300£305£310£315 £313

Price “Was” price With an advertised code

Checked 15 Nov 2026, 13:24

Mattress Online

Worth waiting

£314 Double

Shown as reduced from ~~£335~~

It's been cheaper. It was £294 on 12 Nov 2026. It's been £314 or less for 48% of the 122 days we've tracked.

£280£300£320£340£360 Was £335 £314

Price “Was” price With an advertised code

Checked 15 Nov 2026, 19:34

	Silentnight Extra Firm Miracoil Cushion Top Mattress	Sealy Alford Advantage Mattress
Firmness	Extra firm	Firm
Mattress type	Open coil	Not stated
Warranty	Not stated	5 years
Sizes	Size not stated, Single, Small Double, Double, King	Double, Single, King, Super King

Specs are the figures each retailer publishes. Prices are for the size shown above.