I meant to add my "low cost" idea..I use GOOD sheets from thrift stores for the quilt backs. They are large, prewashed, set-in colors/ any fade is already done/ and usually about $2.oo per sheet, regardless of the size (here at Goodwill and Salvation army stores). You do have to look well about them, so no stains, no tears, no holes, no faded ones, etc..but you can tell by the labels sometimes how old they might be.I have often found good ones, and they are always larger than the quilt top, so you have some left overs for later scrap quilts too. I look for the cotton or cotton blend ones. That is a lot of fabric for $2.00