After reading these posts, it made me wonder: do quilters in the US have fabric swap meets, like guys do with car parts and computer parts? It sounds like a good idea to me. Better still, car parts and fabrics - DH can take the kids to browse the car/computer parts with him.
We don't have them down here, but I think it would be a win/win scenario: stash clean/stash build. That way you would know your fabric was going to a good home and you could go buy some more with the funds.