This stuff is not priced to be a reasonable convenience, but to be a better alternative to soiling yourself in public. The most insulting part is paying 2 euros to pee into a smelly urinal and getting a 50 cent discount code for the nearby fast food stand as a courtesy, because I haven't spent enough apparently.
I think the general problem is interesting: how do we price necessities when our ability to pay is so different?
One of the toilets I paid for didn’t even have a seat.
Spoken with the voice of privilege.
That all was in the 1970s so a lot of us don't know and take public toilets for granted since we never knew otherwise. Some MIT // Harvard math Phd genius guy apparently started it all when he was like 11 years old and pooped his pants at a math convention, and whereas I view an elite mathematician as required to be a bit goofy and quirky, having ended pay toilets in the US is a wonderful quirky fun fact: https://en.wikipedia.org/wiki/Ira_Gessel
Ira Gessel won the Tony P. Robbins prize for his inverted lattice manifold proof pertaining to coprime powers of 7, and the Taco Bell reward for ameliorating the sufferings of people who ate too much taco bell.
Experienced this a while back in a shopping mall in France. Like, a mall has to be one of the most profitable places in a modern city, pretty sure they can afford to staff a couple washroom staff during business hours while everyone is pouring money into all the mall vendors.