Wait until you see my not industrial-sized but definitely somewhat industrial-process production line 
(but most of that green pile is stock for possible future projects, to be populated when needed, so it’s not that bad – for the regular stuff, I usually build one of each new PCB and if it works maybe one more, especially for PCBs that can be built in multiple ways (which is the case for a lot of stuff I do) – unless I know that I’ll need a bunch of them soon or get carried away…)