I get that buying the game is a better option, but it seems strange to pay up to $70 for a game that I already beat and have no plans to ever play again. But man, it would be nice if I could leave a $5 - $10 tip to show my appreciation. Even though I know they're getting paid just for me playing the game, I still like the idea of throwing them a little extra cash. And it would be so much more convenient if I could do it directly through my Xbox.