Wouldn't that mean that density in your case is less efficient since you pay more by a supposedly less valuable property?
But, I was talking about the city, society, or the greater good. Whatever you call it. Higher density is more efficient and uses less resources per capita. Period. Same reason private planes are so bad for the environment.
But do you really pay for suburbs? As I said, the cost intensive positions scale with the number of people. Schools, utilities, ...