Pricing was one of my biggest struggles getting started. What I have found is you can charge whatever people will pay. Check your competion, ask people.
You will find the low end is minimum wage plus material (no mark up on wire). Top rate around here would be $90/hr.
Too many variables to give an acurate price.
One last thing, if you have never worked for yourself, you are only experience in 50% of the job.