Xbox Survey Asks If You'd "Sell Back" Digital Games for 10% Purchase Price

[Darwinianevolution]

So, if you buy a 60$ game, you'd have the option of resell it at 30-40$ with a physical copy, or for 6$ with this digital system. Even if it is more than nothing, it still doesn't compare to retail by a lot. And then there's the option of trading one game for another of similar value instead of selling it (it would be amazing if you could do this digitally).

Also, who would pay for the digital "used copy", Microsoft or the publisher?