I plead the 5th!
I can't even estimate how much. I have a habit of changing my mind frequently about which fabrics I'll use in the middle of a project. It took me the price of 3 quilts to get it right for my son's quilt. Not wasted money though, I used the original choices for other quilts and my stash. I keep saying I'm not going to buy anymore, but I've got no willpower! LOL
I have done a few just from my stash.