Decent quality for the price. The reusable hold-all is pretty substantial too, with a zipper. I'm going to mine as a linen basket!
Can't find this cheaper elsewhere. Possibly made-for ASDA. I found the less substantial 10.5 Tog Double for £21. [Rated 5 stars in 39 of 43 reviews on Amazon).
The prices were
Single = £13
Double = £15
King = £17
Blurb : The duvet is finished with luxury embossed chevron stripe soft touch microfibre, it’s beautifully comfortable & will keep its silky softness for years to come. This cosy 13.5 tog duvet is perfect for use all year round and ideal for keeping you cosy and warm during the cooler winter nights.
Can be tumble dried.