We discussed that in the past, and the cost is much too high. You have the costs for the track, the staff, the equipment, the paramedics, and insurance. If you do a search, the topic may still be on here somehwere -- it was thousands of dollars, I don't remember the exact figure though.
ill see if i can burn some vids of both tracks on a disc i would email them but there are way to big. i think about 40 mb. i think if your running just 5s hot tracks is better but in the 9s at sykart or 5.5 at hot track im going with the 9s every time.