Don’t be lazy. Do the math yourself. A fair price to a contractor that is going broke is worthless to everyone, including you. The only way to know what a fair price to you, is to figure ALL your costs; labor, general liability & workers comp, trucks depreciation, equipment costs, traffic control costs, permit fees, SUTA, FUTA, professional services costs, administrative costs and all taxes. After all that, add your profit margin to that subtotal, then and only then will you know what a fair price is to you. If you don’t know how to do the above math, you may not ready to be a contractor. However if you are willing to work 8 days a week, a CPA may be able to help you with the math.
There are 4 things you need before you start any business; banker, lawyer, CPA, insurance agent.