I know this ain't plumbing but where did all the skill disappear too now days.
I grew up learning how to rebuild garages, reseat taps and all the other run of the mill maintenance junk that comes with owning a house.
Only time I call a tradie is if the jobs is too big or I CBF doing it ( see 1st point ).
Source your parts yourself then get a tradie if you have to, way cheaper I had a plumber replace a whole shower/bath diverter unit for 120 just labour only took him 1hr ( during daytime hours and I turned the mains off for the night )
It stuns me the amount of people who call me out just for a 2min job that needs nothing more than a Phillips screwdriver. But hey that's the bread and butter of the various industries, $100 just to knock on your door.