$1,0000
It varies a great deal but usually a low end manager will make 35-40,000 a year, a decent manager will make about 50-60,000 a year and a General Manager of a good restaurant will make 60-100,000...
It depends what kind of job you have/had.
The amount of money you can make in a year is unlimited depending on what you can do.
It could be $100+ dollars a session, and with multiple sessions, that is a large sum of money.
average salary likely to be near 30k with the possibility in large upscale firms or management positions of making upwards of 50k