Sorry for the question, but being a noob to the expo I obviously have really no idea what to expect. I heard from a couple of people that towards the end of the expo there is a big trade session. My question is this just a trade thing or are there a lot of games for sale too? I don't really have much to trade and I really don't want to lug all these games to Vegas. I'd rather just lug a bunch back. Thanks for the help.