i think its 50 bucks for live a year,forgot
depending on what model u buy,you'd have to buy a hard drive and HDMI cables and shit,if wireless controller is important might have to buy it seperatley as well
HD-DVD add on is separate as well,and i still don't even know what the f*** it does
^^ none of which are that important (besides hard drive) if u just wanna play online and shit
and trust me your gonna want a warranty, ive been through 3 xbox's until i had to quit
then when your done goin thru 300-400 dollars,you have games to buy