Lets think about the "standard" service items on an ICE car in comparison to an EV
ICE Minor service - circa £100-£400 depending on dealer/brand
Engine oil and microfilter
Ice Major service - circa £300-£700 depending on dealer/brand
Engine oil and microfilter
Air filter
Fuel filter (?)
Pollen/particulate/cabin filter (whatever each dealer calls them these days)
Items not always included but some dealers will include/recommend at certain intervals
Spark/Glow Plugs
Coolant
Brake fluid
Power Steering Fluid
Valve Clearance
Timing belt/chain
Gearbox oil (haldex etc)
Clutch fluid
EV Service
Air filter
Brake Fluid
Pollen/cabin filter
Coolant
Inspection of HV cabling
Both ICE and EV are hooked up to diagnostic computers to check for any errors/faults.
So in all, what is the point of this exercise I have done? to prove that there is literally no reason why an EV's service should cost more than that of an ICE car... it is pure profiteering at it's best because as has been already stated, they cannot use markups on parts like engine oil, belts, filters and plugs.
700+ is insanity for an EV service plan. My wife's diesel A-Class is only 640 for 3 years
I'd be happy with that if I was offered it. Are you close I may contact them to take it up. When I asked my dealer for a plan they came up with the equivalent of 794 for 3 years no MOT . I believe year 4 is the more expensive battery coolant replacement too. Did they ask what milage you would be doing?
The only thing I can think is that based on your location on your profile you are falling majorly foul of the "London" tax and it might be worth your while (and your wallet) to get a quote from a dealer/garage outside of London.