Ohh... man, it'd be pretty cool if you had buddies working at Goodwill on tap that call you when something good comes in.
I know that's not necessarily what you're saying, but that's what popped into my head. I haven't seen anything but garbage there. One time there was a JBL sub, a 550p iirc. An okay sub, but pretty beat up and they wanted $150 for it.