[DC/Marvel] How does the magic work in DC and Marvel?

So I just read Doctor Strange: God of Magic, and there are parts where it implies that no matter how big or small the spell is, there is a cost to doing magic even for people as powerful as Doctor Strange, Loki, Wanda, etc.

Has that always been the case or is that a newer invention?

And I know it's a different universe, but on the DC side what about characters like Zatanna or Shazam? Do they have to pay a price every time they do magic or are the rules different in DC?