[csouth]

I agree with Steve. The people with the extra cash will just park on it which will drive up the price they will charge you to buy it. There is no clear cut solution to this problem, it will be around as long as the domain model is what it is (but then again how would it change?).

The closest thing I can come up with would be to in-act some kind of domain activity monitor (use it or loose it) type pattern, but I don't seriously think this would ever happen either.