The last time I called a plumber they ran a power snake about 60 feet down the sanitary line and cut out a pretty amazing chunk of tree roots (I called them because water had started to backup into my basement utility sink).
I was pretty happy to pay the 4 or 5 times what the day rental for machine would have been. Took em about 25 minutes.
He gets the bill and says "That's outrageous, that's more than I make as a doctor".
The plumber replies "Yeah that's more than I made as a doctor too."