I almost never buy just a yard anymore unless I know exactly what I'll use it in and absolutely know that is enough.
I've got a lot of 1 yard cuts, but when I go to use them, it's not enough. Besides, I always figure anything left over an be used in a scrap quilt or for applique.
Always more than a yard, 2 or more. If I love it, 4 or more. If it's on a good sale 5 or 6. I am so glad my husband doesn't read this!!1