I expect the tracks are probably going to be on a mix of the “older” DH tracks, that people rode when DH bikes had about 4 inches of travel and the easier going downhill runs, like Corkscrew.
Chris Roberts put a post on the Dirt website about the cost and his explanation was that he’s essentially running 3 DH events given that each stage has live timing.
Its the live timing that makes this look better to me that the Enduro1 races, where you don’t get the results for several days and you just get in the car to go home without knowing how you did!