You know this entire argument would be easily solved if SE just gave players a button to relinquish their house and get 80% of the gil back on demand. Having to wait 45 days for the auto-demolish to return any gil isn't a solution if someone wants to change servers or just saw another plot open up that they wanted instead. The problem here is a poorly implemented system. You can accuse players of being greedy all you like (though those selling under the circumstances I've listed above are NOT being greedy) but it's the flawed system itself that you really ought to be challenging.