That much huh?Why guess? The numbers you are plucking out of thin air bear no resemblance to actual values which are easily found on Autotrader/eBay....
It will be worth somewhere around £25k, if the owner charged it at sensible rates for most of the miles then they will be way ahead financially in running costs as well compared to anything with comparable performance!
If prices remain at those sorts of levels, then it makes it easy for me in future.
If (when) the vast majority of used Cars are EV/PHEV, and those sorts of numbers - I probably won't be a car owner. By then, any older remaining ICE's will have firmed up know price as availability falls and gets buoyed-up by the EV residuals (if they doing get taxed & legislated off the roads altogether).
As has been speculated before - its forseeable that anyone below "middle-income" average incomes (which are way more than typical earnings in Wales & the North anyhow) will be forced-out of the car.