There isn't a reason to not use quality fabric. There are too many online shops that have sales and clearances that will beat Walmart or Joann's fabric prices. Stock up on the basic neutrals and blenders and your favorite color. Always buy backing fabric when there is great sale. I'll buy muslin and fusibles at Joann's with a coupon but seldom buy fabric there. I don't mind buying a couple yards of $9 a yard fabric when I know I have the basic colors to go with it in my stash bought for a few dollars.