Fanatic,
Your point is.... pointless! Typhoon and the frigates will work out to be cheaper over their lifetimes, because you have only considered the capital (outlay) cost without considering associated fixed and variable costs such as fuel, resuppply, provision of battle groups, manning, maintenence, upgrades and refits, etc.
However, I'm sure you're arguing the case for CVF, so I'll let you off
They're to be named QUEEN ELIZABETH THE SECOND and THE PRINCE OF WALES because no flagship has yet been named after HM and this bucks tradition somewhat, especially given her (to date) 54-year reign. THE PRINCE OF WALES is a concession to the fact that if we don't name a capital ship after Prince Charles now, he might never get the chance!