Virtual Assistants must determine not only the value of their work but also the value created in other's lives when they work in partnership with them. Factors include not only earning top dollar for the hard skills you bring to the relationship but also for your invaluable soft skills. I offer my clients two fee structures. The first is an hourly rate for actual time used. The second fee structure is a monthly retainer, including a set number of hours of my time.
Expenses are additional.
Unused hours are not credited, and additional hours are billed. The specific numbers are not important. What is important is knowing that you create unique value for your clients. Some people will think your fee is too high. Others may not be able to afford it.