Nope, it was one per account.

EDIT: eh.. i mistaken his question... what spirit said...

i thought he was talking about compensations.. but i dont wanna delete my big explanation.... so i'll just leave it... XD

-Original Post-
they compensated watever u bought doing a period of time (i think its early January)... so it doesnt matter which character u used the premium items on... (they wouldnt know which is ur alt or main anyway)

so... watever u bought in early Jan... u get another one... and it sits in ur premium bag... which is shared across all 4 of ur characters..

until you take the premium item out into the normal inventory of any of ur character, then that premium item is stuck with that character....

(hope that made sense.. keke)