This.
Supply and demand ultimately control the free market in our wonderful capitalist society. A customer "win" is not getting cheaper labor at your expense. Customer truly wins by hiring someone competent that they trust for a price they are willing to pay. You win by becoming the guy who can charge whatever he feels is appropriate to do the job right because of his reputation and experience. Sacrificing your own earnings/wages/success in the name of morality and fairness because you feel bad about making good money is dumb. Sorry to be so blunt, but business is business. On being fair, like Mike said, just be honest. Be honest with yourself first, though.
