I always buy material when I find a bargin or at garage sales, and sometimes at a thrift shop. I think half my enjoyment is taking all that miss matched material and making something beautiful with it. I could never buy at high prices. I will have to make lots of scrap quilts to use up all I have amassed. so if you choose to only buy what you are using at the time , that's great. but I would bet you will change as the years go by.