Quote Originally Posted by Jojoya View Post
I doubt anyone who seriously want a house on a world that rarely has any available is going to tempt fate hoping to save a little bit of extra gil. The risk of losing out is too high. The only reason for waiting would be because you're just short of having enough gil to make the purchase.

As for the random timer being up before the first devaluation, it's going to depend on when the plot was relinquished. Unless you have a fairly good idea of when it was, the devaluation timer isn't going to be much help.
No, the only reason for waiting is you don't want to click on a placard for another 8 hours just to have to leave it to someone else because you need to work or sleep. You don't want to click on a placard for another 16 hours just to have someone relocate to it. These are my experiences. So from my perspective, no matter how rare the house, I can't invest any more time unless I know the house is within an 8 hour period of becoming available.