Part of the cost is certainly regulatory / insurance underwriting approval, isn't it?
From then on, which should be like after a week, every single dollar is profit.
On top of that, you have to account for the potential lawsuit if your 3D-printed knockoff respirator valve fails and someone dies.
In that case, the alternative was a few people over there going to die by slow asphyxiation, so the 3D-printed knockoffs were a really good thing, even if some of them failed.
The aviation law: https://www.law.cornell.edu/cfr/text/14/91.3
Where does this meme that companies get sued for parts made by completely independent third parties come from?
The most obvious reason that wouldn't be true is that without a patent on the part or similar, companies generally have no right to prevent third parties from making replacement parts for their equipment. It would be pretty silly to impose liability for something they have no control over.
"Meme"?
Where does your your that malpractice lawsuits are just "memes" come from? Because I can assure you that they exist in the real world. As do massive fines for using equipment that hasn't been FDA approved.