The Spanish cobrar (“to charge”; in the sense of, to charge a fee or collect a payment) comes from the older Spanish recobrar (meaning, “to recuperate”) — which itself comes from the Latin recuperare for the same “to recuperate.”
We can see the c-b-r mapping to the c-p-r clearly, since the -c- and -p- are often interchanged.
Lesson: charging for something is really just recuperating money that is owed to you anyway!

Thursday and Jueves, like the other days of the week, come from the Germanic and Latin names for the same God: the King of the Gods, the God known as “Zeus” to the Greeks, and sometimes as “Jupiter.”