Almost all the quilts I've made have gone to Quilts for Kids. I started with the kits they send out but now I supply my own fabric. I still use a lot of their patterns but have been branching out a bit. QFK stated in a newsletter that it costs them about $50/quilt to send out a kit and then redistribute it after it is returned. They've started asking for either a cash donation or a quilt from your own stash to accompany the finished kit they send.
I hate to do it, but I'm starting to think about finding some local outlet for my donations. By the time I make the quilt, send it back, and give them a cash donation, I think it would be more cost effective to do local.