Quote Originally Posted by Abelfei View Post
They are worth whatever people will pay for them.
You do know that selling houses is against the ToS? So kinda implying that people can get them if they have enough gil (thus buying from others) means that people should go against the rules of the game to get something. Also since Gil itself has no real meaning in this game other than for glamour and housing I am quite sure that we would still not have enough houses even if they would cost that much.