Just the TOP coating for the 1/4 mile track by me was around $150,000.00.
Now add in a concrete launch pad out to AT LEAST the 60' mark, sub-grade materials for everywhere, pits area thats just stoned, timing system, track personel, power service, drainage, 2 miles of wiring, WOW! Forget about lights,bleachers, fencing, bathrooms with running water, concession stands, etc., that make you money. Land cost?
You better figure on $800,000.00 minimum for a bare bones ,no frill track. I would say that a NON NHRA approved track would be 1.5 million minimum, with miminal amenities.
Good luck, though!