As a welder, quality doesn’t come cheap or fast. A lot of work goes into my work. Even if all I’m doing is welding Part A to Part B, a lot of research, prep, and planning goes into it.
I need to know what the base material is, the base metal thickness, I need to clean the HAZ, I need to protect everything near the HAZ. I need to actually weld it and clean it for repaint.
A good welder plans to have their welds last the lifespan of the thing being welded on. If I’m welding a car frame together, I’m going to make damn sure they’re good long-lasting welds that resist corrosion. Those welds will outlive the car itself.