We've been on holiday. Away from both Culebrón and Cartagena; in Egypt in fact.
Now, being a citizen of the world I have access to money in both pounds sterling and euros. Nothing in Egyptian pounds though. Holes in the wall provided us with the local cash. I used both British and Spanish bank cards. Both were current accounts and the amount I withdrew each time was the same.
My British bank charged around £2 and my Spanish bank 6€ which is well over twice as much for exactly the same service and presumably with similar costs to them. Spanish banking can be remarkably expensive - charges and comissions everywhere.