Shine when you do great work, that is what happens!
Wednesday bs'ed with a shop in Florida for an hour had not talked to in a couple of years, had an issue with a hood, I told him how to correct it with two days in sun or infrared lamp for 60 minutes, he said he would rather sand down to base, re-base as he is so backed up, he could not afford the two days in sun.
All word of mouth and he said he turns more business away for different reasons, then he takes in.
Like he said, charge what you are worth and send the cheapies down the road.