Welcome! I have seen quite a few people here shop for their quilting fabric by buying gently used clothes at Goodwill, Salvation Army and garage/yard sales. You can buy shirts, dresses, skirts for a really good price (aka - cheap!) and get a good amount of fabric out of them to use for quilting. Blankets can be purchased to use for the batting. Sheets can be used for the backs of the quilts. After all, that was the original purpose for quilting - use up the good parts of discarded clothing and other fabric. Have fun and be creative!