I don't know the exact price but i guess it's like from 10 to 20 k if you are working on insa but if you have skills why you waste them on working on the government.if you are good at exploit dev and reverse engineering you can sell zero days for non NATO counties for crazy amounts of money.i started messing up with windows kernel before like 8 months and still luck didn't find me but once you get an exploit that would allow you remote code execution, you can sell it like for 2.5 million dollars and retire but this happens once in a blue moon