It might be worth going to Kohl's website and signing up for emails -- you might get special offers that would save you some money.

Ikea has some, though they all look pretty thin in the photos.

http://www.ikea.com/us/en/catalog/products/20271571/

I bought mine from LL Bean years ago. They're not cheap but they currently have a 10% off offer.

http://www.llbean.com/llb/shop/50731...e=down-bedding