Tough call copper.

Depends on alot of variables.

My advise is call your competition and act like a real customer, and find out their hourly rates, and what they charge for various services.

The newspaper, realtors, even marketing firms can help you out with the other info you are looking for.
One of the best resources for information pertaining to your competition is actually the inspectors themselves. They can help out with info too.

Dnk........