These costs were made to fight for the man whom, as only citizen in the whole kingdom, is denied the basic human right on privacy of his correspondence. Finally in a most mind-baffling demarché by juridicians, the public should know what the Prince thinks about badgers, albatrosses, the equipment of the Navy, the administrative strain on farmers and the concerns about failing education standards.
If The Guardian (which has immensely shot it its very own republican foot) has not started the whole crazy manoeuvre to deny the Prince a basic human right (which they would defence for anyone else...) then these costs were not necessary...