the cap for the basic version is 200k. conversion kit, spare parts, upgrades & gadgets raise to 300-350.
It used to be 168 000 euro from the beginning of R5. For 1 car with either gravel or asphalt setup and no spares. This sum was at some stage allowed to be index adjusted. I think I saw a used...

In Germany it's 119.99€ a year. Exaggerated a bit, but it gets closer and closer to 150€ over the years
WRC mainclass from 2027