Hi Emily, 
Thankyou for your interest. 
I have been doing this for 4+ years and my rates are comparable with other ladies who work as Personal Assistants as well as do Business Marketing and Consulting for women who work in the sex industry. 
I base my rates working Mon-Friday from 10am-10pm 
Weekends are additional. 
That's monitoring, organizing emails into folders, client services, screening/verification. booking, scheduling, marketing and putting up ads, updating etc.. 
60 hours a week , 
I have 3 packages, and the base package which includes , screening/verification, orgainzing, answering calls, booking is $325 
I am running a special right now where you can get Tier 2 service package for the price of my Tier 1 package, and I also offer additional discount if you pay 4 weeks in advance. 
I also have a daily rate of $75 per day. 
Plus there is a quality of service that is important as alot of Asst. will carry several clients and I have a max of 4 clients that I will carry at a time, Because my service is more personalized.. 
Feel free to shoot me a message if you have any other questions.
Have a safe and prosperous week 
~Cat