No need to go further than dead center EU to see chargers where the cost has a time component, and an energy component, and even a (small) one time fee. Sometimes the charger is inside a paid parking, there that comes on top. These aren't shady operators either either, just the way they saw fit to prevent abuse and make more money.

Some have reasonable limits to prevent abuse [0], others just charge the customer as much as they can get away with.

[0] https://www.tanke.io/oeffentliche-ladestationen/