It's a little naïve the way the thread is proposed...
It's known that happen with all artifacts made on industrial lines: airplanes, cars, boats, freezers, vacuum-cleaners or laptops.
Re-produce a good with spare-parts is much more expensive than the original line-made.
And the same with human beings.
How much costs a "lost life" in terms of an insurance company (or a court) and how much some "spare-part" like a compatible kidney (being black or legal market)???