Not enough facts to work this out, you do not know how many clients they see per week, or how many weeks they work, or what hours a week a they. Are there paid extras etc.
Then factor in the costs, such as hotels, make-up, lingerie, vehicle running costs, other transport etc.
I know a couple of WGs that do not need to work every week, only enough to get by on.
At the end of the day who really cares,