It does seem rather extravagant, but that's how money works - one can choose how one spends it, and one apparently has.

£62k for a Golf buggy is massively extravagant. You can buy them (electric, and with 4 or more seats) for around £10k (or way less than that if one doesn't mind buying Chinese!)

I've no doubt she has chosen the best of British craftsmanship.

Built by Garia (a Danish electric utility vehicle builder) in collaboration with Mercedes Benz, hmm.

When you're 96, you identify something that will make your remaining life easier, and you have the cash and no other plans for it, you should buy the something.

I have no problem with the notion of HRH needing a golf buggy to get around. My point is that it is still just an electric golf buggy. It may have comfier seats than the typical golf buggy, which would obviously be desirable to ageing bones. Leather upholstery?, depending on your own opinion this may be desirable, but neither makes it worth 500% more than a 'normal' golf buggy. The other stuff mentioned, like an infotainment screen and bluetooth, would the Queen be interested in or know how to use them?.

I don't know if there any UK made golf carts(?), probably not. Assuming that to be the case, a standard golf cart could have been purchased and then given to a UK company to make it more suitable for the Queen's needs. Not only would this be supporting a UK business, but the end result would almost certainly have still cost considerably less than £62k.

>>Built by Garia (a Danish electric utility vehicle builder) in collaboration with Mercedes Benz,

That is a pity.

What is? The unavailability of a comparable British product? The ever decreasing level of engineering and manufacturing proportion of our GDP? The lack of available skilled British artisans for the manufacture of such a product? At least her Bentleys with their mid-twentieth century engineering have lasted 20yrs, although I doubt if they have covered many miles and been outside much.