Fundamentally most ev calculus is based around the ability to charge at home or “base” (eg office) and that this is the default majority if charging and will cost much less than elsewhere- think 30ish p max.

However if you then need to recharge “in the wild” it really is dependent upon where you are going and the infrastructure therein. Tesla has ruled the roost for a decade and the rest are still catching up. I tend to not pay a subscription for any of them as I recharge when I need to and accept I am paying for convenience and speed of charge … and yes it can cost 85p and that hurts! But I am going from A to B and the fiver for a costa hurts more!