I trade-in clumps of games. Like tomorrow I'm going to trade 6 games at Game on a trade special, meaning $136 of credit. So I'll pay $50 on top of that to get GoW3 and Arkham City. Can't afford to not trade in for games I want. But I do sometimes keep a game. Read Dead, Metro 2033, Dead Space 2, DA Origins. I believe Skyrim will stay on my shelf for, oh...a while 