They usually charged you $79.90 just to come and have a look; I had a incompetent technician showing up for a leak; He told me to break down the back wall or the tiles and replace the whole thing with an expensive brand for my plumbing is too old; then I have to hire someone else to fix the tiles! He ended up with a $700 bill! Then he left with a bill to come and talk nonsense!
I had another plumber coming the next day; this man made 2/3 trip to Home Depot to get the parts and only charged me $105 to fix the problem:
Refuse or ask for a free estimate when your plumber wants business; There are still honest professionals out there!