I've really toned down my bargain fabric shopping. I don't have any thrift stores around me that have fabric.
I keep an eye out at garage sales, rummage sales and such, .
Since I make quilts for children and soldiers, if I find something that is good for either I'll pick it up only if I know it will match something I have at home or there is enough to do a complete quilt top. Or if it's enough for a back. If it's patiotic fabric I pick it all up. If it's good quality. If it's only one fabric that I'm not sure what I'd do with it I most likely won't pick it up.
I have such a stash that I haven't decided to use clothes in my quilts yet. Maybe once I run out and fabric prices stay high I may go down that road.