I don't know, Misha said he will buy one for himself. Maybe he will use it as a taxi as wellAh but how much for an all electric lap at sub 8 minutes?
But gt2rs mr is 450K$ production car record holder and for 350$ it will be driven by somebody who actually can do that 6:40 time. They can't return car initial and maintenance cost - it's used for marketing purposes, so it's a steal price.
VW ID.R electric prototype spent 25kWh on the Ring - roughly the same as Misha spent with my car, but they made 6:05 time with 0.5x weight, 1.3x power, 2.5x corner acceleration from a much higher downforce. With gearbox it probably can beat absolute record of 5:19. But you can't ride it - single seater.
Another fun fact about the Ring - since it's a public road you can only use dot tires, it's prohibited to race and helmets are not required.