Guild wars you have to pay to get hold of, whether that's buying just a CD key or the entire game from a shop. It's better value from a shop imo because you get a poster and other nifty stuff with it
There's no monthly fee and i've got a level 12 character but i haven't played it in ages because i've just kinda gone off MMO's.
Maybe when GW2 comes out i'll buy that, the idea of a better MMO than WoW with no monthly fee with the same continuous world sounds great to me