So I haven't been following games much lately, but can someone explain how portal 2 is $49.99 all of a sudden? IIRC Portal was like $10 or $20 and came with the Orange Box, so how is the sequel so expensive? Portal was only a few hours of gameplay, so unless Portal 2 is somehow much longer and/or includes multiplayer I don't see how it could possibly be worth $49.;99.