Just a heads up:
NCsoft has a purchase limit on software. Imposed limit on aion preorder checks it's database for three things: credit card number, physical address and IP address. They have limited it to ONE copy per any of the above matches. I have tested this with other connections and a credit card with a seperate address.
See ncsoft's answer to this issue:
http://help.ncsoft.com/cgi-bin/ncsoft.cfg/php/enduser/std_adp.php?p_faqid=989
So if your situation is husband/wife or just roomates at the same house, you will encounter this issue. I guess this is a good thing for retailers worried about ncsoft taking all the sales. Unfortunetly it causes some awkward moments if not prepared for the issue. Just imagine the wife wants to play the game and the husband buys his first...