I would partake in a switch site as well...
I've had bad luck before at Record and Tape Traders. There has been times where I walk in with a stack, and walk out with same stack, even considering that their condition was impeccable. I've heard that it depends on what you're selling, and what the stock of that is at that particular store, and what the likelihood of it being sold. So who knows?
I've heard good things about Soundgarden before.
Where's the Cellar?