Well you worded it rather flippantly, but yeah, pretty much. Some of the parts are likely milled/lathed in-house but most part wont. Even the car industry - that is actual mass production - gets most of their components from suppiers these days.
How did you imagine this looks like? Did you think they have specially for seacraft or suex designed and build robotic assembly line that build the motor from scatch, does the wireing and put in O-Rings?
DPV and rebreather companies are tiny little companies. Doing sub assemblies or not and and hiring some extra people doesn't make something 'mass production' or automation... that more of a work flow thing.
In the picture it looks like you have a revo. You think those are build by a machine on an automated assembly line that cranks out 500 ccr per day? DPVs, like ccrs are a tiny, tiny part of an already tiny scuba instustry. If they were mass produced products, they'd be WAY, WAY cheaper. Consider this, you can get a brand new car from a company like Dacia for just over ten grand. That's hardly more than a new revo or 1.5 times the price of a DPV like the XK or larger seacraft models. Now look at how many parts are on a ccr or a DPV and how many parts are in an internal combustion engine... nevermind the rest of the car.
The stuff is so expensive because it's super low volume and not mass produced.
