I don't buy crap, I just rent it.
I rented Pirates Of The Caribbean: At Worlds End because I thought it might have some decent Co-Op play (the last one had Co-Op play). The game sucked and it had a very, very small portion of Co-Op. So that was a waste.
I rented Medal Of Honor: Vanguard the same night hoping for Co-Op and it only had split-screen multiplayer (which wasn't that great). The game doesn't even support online play.
I've blown a lot of money on game rentals, most of them being crap when I want to play a game with more than one person. "1-2" players should be exactly that! But games like Rainbow Six force you to beat a level first before letting you play with a friend. That's a load of crap.
Oops, now I'm ranting. Read the labels and read reviews before you buy or rent your games, kiddies.