The numbers look less impressive with Boston, which isn't a particularly cheap city. https://www.numbeo.com/cost-of-living/compare_cities.jsp?cou...
Internet and TV ~1.5x as expensive. Mobile phone plan ~2x as expensive. Simple things like fresh fruit and veg at least 1.5x. Utilities ~2x as expensive.
Although, that said, we can keep going down the line and look at cities like Raleigh or Austin where wages are not that much lower than here and prices are way lower. Definitely have been tempted by that at times.