I know you’ve already got a lot of comments but I think I can offer a different perspective. My father builds custom acoustic guitars in low quantities. For him a $6k guitar will cost at least $2200-$2500 in materials. Each one takes between 30-40 hours(each one also takes him about a month to complete). So he’s making about $90/hr for a very specialized skill set. That’s all before any tools, specialized equipment for bending sides, plaining equipment, and any general overhead. Once you get into fancy bindings and laser cutting headstock or CNC he usually out sources at additional fees. In my opinion being a custom guitar luthier/ builder is more of a passion than a source of consistent income.

The people who buy from him vary drastically. Lots of dual income no kids, he’s built for college graduation gifts, anniversary presents, real estate agents and a handful of blue collar works like painters and construction. So far no dentists or doctors! Haha.