Always fun Mirek.
The difference btw me and you is that you think like an engineer, and I think as someone btw a driver, spectator and a cup manager.

Imo Norway needs a cup again. It should be something like a R1+ or R2-. A car is more than hp.
R2 is about 20 000€, the french one about 40 000, and a full R2 fiesta 60 000.
A R1 with a 1000 ccm turbo engine on 140-150hp could maybe be about 25 000 as a cup car.
Frank Tore Larsen normally Fiesta R5 driver, drove a Fiesta R1 this weekend, and became 19 overall, just ahead of two Fiesta R2s. So driver capability matter.

I am thinking guesstimate/ ballpark figures, and always do. If same driver drove same ss in same conditions on same ss. What would the difference be, aprox pr km SS.

Life is like a box of chocolate.....