In the past I have bought full or partially full bolts of fabric. We have a salvage store locally that carries fabrics and the prices USED to be very reasonable but in the past year the quality has gone down as the prices have risen so I no longer buy bolts but when I did I usually knew I could use it in a quilt and have the rest for a backing. I've often purchased a bolt of white on white as that always comes in handy for a number of projects as background fabric.