This is discussed elsewhere but "market prices" are a distribution of bids and asks. A buyer or seller can be on the high or low end of that distribution, which does not change the fact that the distribution itself moves up as local incomes go up.

Market prices are based on whatever number the investor decides to make up.

Whether it be another investor or a website telling them to do so. There is no basis in reality.

The "housing shortage" is really an "affordable housing shortage". Don't get the 2 confused. One is based on reality...one is based on speculation.