I've never paid big money for a game up front, but I've dropped hundreds on a few lots to get rare games like Panzer Dragoon Saga, James Buster Douglas Knockout Boxing, Dragon Force, Shining Force III, etc. The biggest was the Buster lot - it came with 70 games, 2 boxed 3D glasses, boxed phasers, etc. and I think I paid about $500 with shipping. I ended up selling the rest of the stuff minus Buster and actually making a profit on it, but still, at the time it was a big plunge.