I am so glad I read this. I have wondered the same thing. I can't afford the high dollar stuff at the quilt shops but I love to quilt so most of my fabric is from Joann's, Hobby Lobby and Walmart if I can find one that still sells material. Haven't had any noticeable problems, but I am very new at this and probably wouldn't know I had a problem with the material or not. I always figure I did it wrong. Thanks so much for everyones input.