Just a tip that I have used, take it or leave it. The US govt. publishes their pay scale openly and the level of experience for jobs that go with them. I say to the recruiter: "If I took this position with govt., I would get paid xty-thousand... And that's just bare minimum... That comes with insane levels of job security... Does this position offer that kind of security? No? Hmmm... also govt comes with crazy high pension benefits that you don't have... What do you think we should do to bring that number closer to market reality?"