Oh thats ok, its just me kneejerk reaction to the idea of screwing up PH in WoW by selling them. There is such a huge potential for creative casual play with player housing, whether its through quests or even something as fun as learning a new skill (Carpentry) and in that process learning how to make houses, including the idea of multiple plans for houses.
Id prefer it if they never introduce player housing into WoW rather than put it in and screw it up.