You have to charge what your worth or you become what you charge.
The first time you "see" or "get" a job is the best it ever gets.
The folks that pay the least will complain the most and will never send you any future business or make referrals for you.
A satisfied customer is one who received good value for the services he paid for and would gladly pay the same again for the services rendered.
There is no such thing as a perfect job, but getting close enough to perfect to satisfy the consumer is what is required. Be willing to listen, and discuss with realistic advice and counsel what a job will require with any customer.