When I'm looking at fabrics if I find several pieces that play well together I will buy 1-2 yards of each. If it's something I really like and it's only one fabric I'll buy 3-4 yards. It's no fun to find a quilt you want to make and some fabric in your stash only to find that you are just shy of what you need and it's no longer available. I'm trying to learn from those mistakes.