There's variation on a single street :) But what neighbourhood you live in Boston is a choice. Picking up and leaving a city is not a choice for most people.

There's variation on a single street :) But what neighbourhood you live in Boston is a choice. Picking up and leaving a city is not a choice for most people. Also the 'cost of everything except housing' is pretty consistent - everyone pays roughly the same a gallon of gas, and an identical basket of groceries.