It would be much more useful to see a comparison to income so you could get a better idea of how realistic purchasing a home actually is. For example, Buffalo has cheap homes, but can you get a job there that afford one? And how is the quality of life there? How is crime? Like, it might be the case that San Jose is a better deal or more realistic if salaries are high enough to justify the home price. Because right now, this is more a map of just, what is the overall economy like for each city.