Uncertain about buying game

[wcer]

If your only concern is duration then there are plenty of games out there that will give you a better return.

The point for me at least, and others, is not that we are buying X hours of gameplay, but that we are buying the ability to enjoy certain types and qualities of experience. Whether they be 5 hours or 50 is often of little relevance (though $60 for 2 hours is likely pushing it, $15 for 10 hours certainly isn't).