hey im looking for max prestige all cods on all cods think i saw it was $40 on a new account will i be able to change the gamer tag and will it have xbox live on it ?

how much for an account with a name change available with cod 4, waw, mw2, bo1, mw3,bo2, ghost, advanced warfare all max prestige all unlocks?

how much for mw2 all achievements already 10th mw3 max prestige unlock all black ops 1 unlock all and bo2 unlock all already max prestige on both and ghost max prestige unlock all?