I sometimes buy fabric to match a quilt. It depends on the quilt. Mostly I buy the wide fabric that matches and I like the look. I also pieced the backing and for certain quilts it fits. For me to buy 5 to 6 yards of fabric for the backing is a waste. The wide fabric is reasonable and looks fine. I have a few quilts I used flannel for backing(these quilts are used on the couch or bed.)