Isn't it like 3 million for a small house? Not to be rude, but I don't know why you wouldn't expect them to be sold immediately if all the other wards had already been full for some time. It really only takes 1 person who actually tries to make gil to afford a small house or hell, even a medium one. If even a group of 8 people had been contributing money they get from daily dungeons over the last 6 months, they'd have enough for a small house. That makes pretty much every FC a realistic contender for small plots.