Idaho Falls is really affordable on a GS-9 salary. But it's Idaho... if you're into that sort of thing then it's great. Otherwise....I actually got in touch with someone who moved from NY to ID, as a federal employee, and he says it's a littler tight as a GS-09 (but he also has 3 kids + non-working wife, whereas I have no kids and no wife), but totally doable. He also bought a house, which I don't know if I'd make that leap so quickly depending on stability.