If you are looking for local customers, then pricing is going to be regional. It does vary all over the country. I would go to a couple LQS' in your area and get some brochures from other quilters to see what the going rate is.
There is a list of long arm quilters who offer services thru this board. You could contact those from your area:
http://www.quiltingboard.com/members...s-t169702.html