Xbox live point be a great way to enhance game you purchase for the xbox . I buy the point on amazon . the free shipping make xbox point convenient and cost effective . there be code on the back of the card that be already valid . all you have to do be redeem the code in xbox live . I like to buy my point through amazon because I have have issue with xbox live when I give they my credit card number . on multiple occasion , Xbox live have lock my account because of the point I purchase from they -lrb- if you choose to buy directly on xbox live , it be better to buy once large sum of point -- the xbox fraud unit lock the account if there be multiple small purchase -rrb- . unlock the account involve wait up to a week and multiple phone call to xbox live support . while I appreciate they security , I prefer to avoid the hassle . the 4000 point card allow you to buy many item on xbox live . most arcade game range from about 800 point to 1200 point . add-on range from about 160 point -lrb- for Rock Band song -rrb- to 1600 point for very-large add-on . its a good denomination because it last for several week . there be some great xbox live `` arcade '' game . many xbox 360 game offer additional character , level , mission , and other add-on material that can make a great game even better . but xbox point can be use for more than just game add-on . Xbox live offer movie , music , and avatar item . everything you buy on xbox live be save in you download history . so even if you delete it to make room in you hard drive , it be available to be download again . personally , I find xbox point to be a great investment that allow I to unlock the game I purchase for many additional hour of play . for you entertainment dollar , expand you favorite game be win proposition .