Last place in Chocobo race if old.
From Shadowsteal (links and summary):
You can purchase the PS3 version and transfer the license over to the PS4, assuming you have a PS3 and 4. Once you have transferred, however, it is a one-way trip, according to Joystiq.
The PS3 version is cheaper, currently $25-35 at most online retailers, including Sony's online digital store. It is eligible for Target's Buy 2 Get 1 campaign this week as well.
Failing that, get into your DeLorean and head to last week when you could have gotten it for $15 on the PS3.
You get a month for free, but after that, the subscription fee kicks in.