What is the average salary or pay rate of an event planner?

This will vary greatly. Moreover, most event planners are either self-employed or employed with a company that pays a salary, not an hourly rate. As a former event coordinator at a major-market radio station, I can tell you that in Dallas, Texas, the average ranges from $9.00/hr (believe it or not) to around $45,000/yr. I know that is a huge gap, but experience, education and position weigh heavily in that. Ask someone at the reference desk of your local public library for the Occupational Outlook Handbook. It lists all kinds of information you would need to know,(including the salary) of just about any occupation you can think of.