Earlier quoted context omitted.
Personal breakdown in an area at cycling distance from a big banking center (Otemachi): - 1 bedroom in a quiet neighborhood, small designer appartement: $1100/mo - 1G fiber: $23/mo (special 1 year price, need to change vendor yearly, ~$40 otherwise. Search on kakaku) - monthly expenses: $400 restaurants & groceries, $100 subway (Source : I've been living in Japan for two years)
What's the tax situation like? When I was first starting out I ran into a few opportunities in Japan, but it looked like the salaries were very thin compared to expenses. (US $40-50k starting.) I never got as far as looking into Tokyo taxes, but for entry-level work it seems like they'd make the difference between awkward (>1/3 income on rent) and concerning (>1/2 income on rent).
Taxes are high for corporations, not that high for individuals usually below a quarter of your salary, including insurance, pensions and local and national taxes.
Overall Japan is not the country to go to if you want to maximise your salary.