jewelryguy, we have several affiliate managers among our membership. But when it comes to how much someone is making a lot of people consider that to be very personal information so there are plenty of people who aren't willing to say how much they earn. However some might be willing to say.
Here is some information that should be helpful to you in answering your question.
Based on the information received, you will find that 24 percent of salaried affiliate managers make less than $40,000 a year and 10 percent make more than $120,000 a year with the rest falling in between.
Here is a link to that salary information
Ask Shawn Collins: What are affiliate managers earning? | Affiliate Marketing Blog by Shawn Collins