Personal choice, isn't it. Natural materials such as down are always going to be more expensive than plastic fibres. They're also much more breathable and less sweaty.
I've had quilts £100 plus. The £20 one is the best I've had for me. Washes and dries easily too. Plenty of cheap wines in expensive looking bottles.
This a summer duvet for those wondering about toggage
Comparing a down quilt with a £20 polyester fibre cheapie is rather like comparing a £4 cooking wine with a top end one though. :D
Hybrid. They'll try anything. I've noticed that JL has been linking with a lot of cheaper manufacturers. So just because JL sell it now doesn't make it good. £80 for a Hybrid quilt. My 10.5 cost me about twenty quid and it's the best I've bought and I've had some expensive ones.