xbox premium 300
wireless adaptor 100
enough live to last the generation (2005-2012)= 350
total cost for xbox with wireless and live= 750$
total cost for wii= 250
total cost for ps3= between 300-400 depending on how/where you buy it.
Now throw into the mix faulty hardware over the first 3 years
xbox=double the price of what is supposed to be the most expensive system