Its all to do with transportation and nightlife. Bart runs down market street and then south through the mission. A lot of people work near market street. Easy

Its all to do with transportation and nightlife. Bart runs down market street and then south through the mission. A lot of people work near market street. Easy commute. The mission also has a strange mix of gentrification. It has a big mix of locals and new tech workers. With the influx of tech workers there is also a lot of nightlife. Now if you live in a place like sunset or anywhere in the southern part of the city you are kind of stuck. The southern part of the city you will have to take a bus. The bus can be a terrible experience, if you live on the edges expect a 1hr 1way commute. This is just a rough guideline, not always true. Sure sunset has muni trains but its still slow because the majority of the time muni is above ground on the road and does not have right of way. I live in outer richmond. I think the pricing data is skewed here due to seacliff. TLDR; transportation sucks. Most of the areas that look cheap require you to have a car and drive.