This shows me that the key is to educate newer contractors as to the cost of doing business and the difference between being an "employee" of yourself and a business owner. Does anyone have anything to add to this subject?
Everyone's cost will vary depending on their companies situation.
Here is a handy calculator to see just how much you
should be charging:
Business Owners' Cost Calculator
http://www.masterplumbers.com/utilities/costcalc/ Plumbers, painters, carpenters...it doesn't matter. Just fill in the blanks and hit "Calculate".