A fee I’d rather skip though most every time I needed one, they were inexpensive. It was like they got a kick out of it and worked for beer money. Others.... not so much. But still no complaints!
It isn’t common for these to break but with that said, any man made item will sooner or later fail because man made it. Everything has a service life.
(I’m hoping mine is 90 years or better! LOL!)