The price is the price
Flat-rate, in writing, approved by you before work begins. It never changes mid-job, and there is nothing to negotiate at the door.
The person who quotes, works
The plumber who scoped your job is the plumber in your home. No hand-offs, no commission math, no stranger with a tablet.
Someone answers after
If anything is off a week later, you call the same number and reach the same owner. That is what a name on the truck is for.