the ethics of rock n roll

hmm, it looks like I won't get paid for my services until AFTER finals! This causes a dilemma. Do I just buy Guitar hero now and put the money into my account later, or wait? But if I wait, then my roommates may never get the privilige of rocking out on an almost full size guitar! But they are making a sequel! Should I wait until the next one comes out, or what? It's 80 freakin bucks!