They are basically totally extinct in the US, so from a US perspective they are very unusual.

In the US they fell out of favor during the 1970s because it was argued that they discriminate against women, as men could use urinals for free.

I get furious when payment is needed to pee at a train station... It's not the pennies it costs, I just find it unethical, at least where train stations are owned by the State.