Don't knock ALL precuts. Some stores cut their own from oddments of fabric they have on hand. If you buy the name brands, Moda, Kaufman, etc. you should find them all the same size. I bought a pack of fat quarters from a LQS, and when I laid them out to use I found them so crooked I couldn't get a needed 18" piece from them. Then I learned they were cut in the store. I think the store managers give the employees "busy work" so they begrudgingly cut willy nilly.