Look at it in this perspective:
Electrical engineer "A" is a self employed sole proprietor, his home is paid off and he doesn't have any debt. His wife who is in the same situation makes $250K a year. Engineer A is bidding on an installation job and knows there will be competition so his quote needs to be low.
Electrical engineer "B" owns a big company and employees 375 people. He has a fleet of vehicles and two warehouses and everything if financed. His company has no real cash in the bank and relies on receivables to pay for payroll and loan payments. Engineer B is bidding on the same installation job, he also knows there will be competition but can only bid so low because of overhead costs.
Obviously A can undercut B because of his financial situation. Its no different for any other profession. Lots of variables dictate your price, the least of which is what the other guy is charging. (although its nice to know)
You got that backwards. EE "B" did not get big loosing out on his bids. He knows the current cost of doing business and pirces accordingly, and gets the jobs, hence he is the "big company". Little guys try to make it all on one job, adn they never last. Come and go. I see it all the time. You even got that resoponse in this thread. "Make as much as you can". Yeah right, try that out but don't go spending all that profit in one place.




