I don't know much about game value but I do know things like Panzer Dragoon Saga, Dragon Force, Shining Force 3 and Burning Rangers used to sell for a decent amount a few years ago. I think Conker's Bad Fur Day was too. I could easily be overlooking something though because I don't pay much attention to old game or rare game prices. I wouldn't sell these games because I enjoy playing them. I'm not interested in bragging about them either.