@Chancerubbage depending on where (and, more importantly, how) you live, charging prices "at the pump" may be largely irrelevant for you.
If it is in any way possible for you, having your own charger at home will be the cheapest solution by a pretty wide margin.
My wife has used our Kona EV as her daily driver, doing around 100 km (60 miles) to and from work, plus whatever else we needed the car for. We are close to 200K kilometers after a little over 4 years, and I'd say that 95% of that was charged at home - and that number would have been higher if we had not done two road trips around Europe.
Expect 4 miles per kWh for a small SUV or crossover throughout the year and take a look at your electricity bill. There is your charging cost on most days.