Houses are worth a ton because SE doesn't know how or is unwilling to put in the time to fix the system itself. So it's an extremely limited commodity that sells out very quick when new ones are added.

At the end of the day, people want houses and SE isn't giving a way for people to get them. So players will buy/sell/trade among each other to get one, just in unsupported/unsafe ways.

I don't think it's entirely unwarranted to ask SE to address the issue they've created. Ideally they'd fix the entire system, but failing that they can at least make a safe way for people to trade/sell them.