It is a crazy price no doubt-especially what with day to day prices being what they are, but then it’s no different to someone potentially spending £1100 on an iPhone when the regular one does 90% of what the more expensive one does for a lot less.
And by not budging on the RRP of the base PS5 for the most part, now the Pro is a thing they have normalised the price of the regular and people will see a £220 saving and end up with that.
It’s merely bells and whistles at this point and while I personally wouldn’t pay £700 for a PS Pro if someone’s made peace with that amount and are happy to spend it and get the premium experience then good luck to em.