I think you may be thinking of "Pawn stars". Similar deal, just the pawn shop owners will buy anything, not just toys. On one episode they tried to convince the owner of a pretty large TF collection to part with it for fraction of its potential resale value.
I don't mind this show, but the guy is looking to double his spend when he on-sells the toys and he seems to buy mostly from people who aren't really aware of the value of what they're selling. Just makes me cringe a bit for the people when I know they've missed out.