I guess a lot of how people interpret the data out there depends on their standpoint on whether a hereditary monarchy really should exist in this day & age.
Similarly with the oft quoted "they bring in tourism figures" - I went to Paris in August & the lack of being able to spot Marie Antoinette's descendants wasn't stopping the hordes of tourists looking at their former palaces & monuments. Nor I guess the stuff that Napoleon whacked up either or tourist numbers in general
The 12p to 30p cost per head of population to me is irrelevant than the total cost along with all the ostentatious pageantry, pomp & ceremony at a time of inflation at over 10%, foodbanks providing record amounts to those in need etc.. It was also sickening, to me at least, to see the photos of homeless people begging in view of posters paying tribute to a Queen born in to immense wealth & privilege
And being born in to that immense wealth & privilege was why she gave her life to service of her country as you put it. The vast majority of people would do the same if born in to that position
I respect your opinion like but I can never agree with it as I suspect you feel towards mine - I did find your claim that Charles benefits little from his immense (on paper) personal fortune very funny though!!