How much do snipers in the US Marines get paid?

All US Military pay is determined by rank and the years of service.

Military snipers are paid by their rank and pay grade in the military service.

To best answer your question, anywhere from $16,800 to $50,000 a year depending on several things. No they don't get paid by kills, and they don't do contract work. There is no bonus for being a sniper.