Final Fantasy 14: ARR CD Key Sites - http://goo.gl/n1yWCZ
Client Download: http://www.finalfantasyxiv.com/playersdownload/na/
I got my key on one of the sites in the URL above. Speak with LIVE support and ask them if they have it in stock. Also try to get a discount if they are overpricing the game.
Good Luck!