I buy.......6 yards! I have waiting on the side line, 6 yards of one fabric and 6 of a matching fabric! I fully intend to make myself a quilt! Then before I leave the quilt shop, I make sure I have all the information on the fabric I just bought, in case I need more!

2-5 yards, unless I know I'll use it in a scrap quilt or apron, then 1 yard. I don't usually buy fat quarters or less than 1 yard.

With having to wash my fabrics first I usually buy 2 yards at a mininum.

If I really like it I buy a couple yards. If I love it I buy 3-5 yards.