Good for you! It always seems to be such a shock when I go to buy backing because the fabric I really want will cost me $40-50!! Sometimes I've planned a quilt and purchased or found the fabric needed in my stash including the backing. Then as I'm making it I decide to add rows or more borders. Then when I start preparing the backing I see that it's not enough and realize that I've done it again....shot myself in the foot by improvising. It seems that's always the time I can't find any backing I want except something costly, LOL!