Definitely not worth the time nor the money. I'm amazed on how Microsoft wants to control "reselling" of games. I resale old games myself for very little money when I want to get a new one. There's a lot of shops that sell you new games cheaper if you bring old games.
Being unable to go that way sends me away from this console. I'll just stick to PC, upgrading it a bit when it gets rusty... :P
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