Aye, a PS3 user would have to pay some sort of monthly fee, otherwise there will be so many QQ posts about it, from non-PS3 players. Personally i will be playing FF XIV on my PC, i do have a PS3 though.

Reasons for this;

Mainly cause i prefer to play MMO's on a PC

Also access to Vent, TS etc is easier to access as this tends to be a huge part of communication from players in the same Linkshell/Guild/Legion/Allience - what ever you wanna call it.