I don't have a Good Will store near, but I do have a Salvation Army store nearby. I think some areas are good for fabric and sewing items and some aren't. The one near me never has anything like that. I needed shirting fabric and thought I would get some men's shirts and cut them up. They were $4.99 each. I decided that I would buy new fabric rather than spend that much on used shirts. My daughter goes there all the time and gets receiving blankets for her dog's cage for $.50 each. Then she just throws them away when the dog is done with them.
Sue