I once had a hotel charge me a $30 per night "urban fee" - literally it was called that- on top of the advertised nightly rate. It was for work travel so I just payed it. I emailed them (I know pointlessly) to tell them I was never coming back (it was a hotel i used to go to a lot) and they just ignored me. Imo it's criminal, and it also looks pathetic for the companies doing it.

I have a company, and if I charged made-up fees to my clients after quoting them a price, they'd tell me to get lost and I'd lose your business. You can always tell who has inappropriate market power