I have many many precuts that I have accumulated from various sources, usually from a "too good to miss bargain". I prefer layer cakes and jelly rolls, as I can find more uses for them. I keep them together till I am ready to use them. Occasionally I can find 2 sets that can go together and then may break them up a bit. I do a lot of charity quilting, so precuts are a good way to speed through the process, and add a free pattern, and I am all set.