Greetings everyone!

Currently, I am thinking about offering private/semi-private/group English lessons and am not 100% sure as to how much to charge?
Fortunately, I don't reside in a poor area of China and have the luxury of being one of the only foreigners at my location. If anyone could provide me some insight as to how much I should be requesting, I'd appreciate it. I don't want to overcharge, yet this can't be a waste of my time either (being that I am enrolled in my MA distance Ed.). Thanks in advance for your feedback.

Cheers.
Lynn.