I actually over paid for those, $50 for rez and $25 for Gitaroo Man. I played Rez for an hour and I dont think I like it that much. I am not sure about Gitaroo Man but I know the price would drop in half if i decide to open it. So should I keep them and hope their value will go even higher or sell it now? If I decide to sell, where should I sell it to get the most value?