I’ll assume those facilities make their money on the big events, so they can afford to not ‘gouge’ the club racers at AMA tracks. And once again, to build a dirt track costs much less than a pavement track, thus the initial cost is not comparable. Hell, Grattan built one with a couple of earth movers, that’s its. Spend some money on water and the equipment upkeep, and you have yourself an AMA course.
Everything they brought in was profit. No overhead costs, nothing. You look at the 2-mile road course, they spent thousands of dollars to pave the road course, so prices go up, and up and up to rent the track, especially operating only from April to October.