I keep an eye on clearance sales. I look for fabrics where there is 9 or more yards left on the bolt and if it looks like it would make a good backing. Once I found a wonderful sale at 50% off and if you bought the remainder of the bolt, it was $3 a yard. Not bad for quilt shop fabric. As I do scrappy quilts frequently, I really have done most of my shopping in my bargain backing section. All three of my recent Bonnie Hunter mystery quilt finishes have some of this backing.