You might not be far off.
My cousin and his wife were both teachers at an American school in Lima. Like for the children of Americans working down there. Businessmen, diplomats, etc.
They made something comarable to what a teacher or other civil servant (fireman, tax assessor, etc.) would here.
Down there that got them a big gorgeous house with all the amenities and even a maid, and still plenty left to sock away.