My wife got it on special for $160, but the regular price for the 20-lap adventure (with the extra bells and whistles I had) is over $600. To be honest, it's not worth $600..... but I'd do it every other weekend if I could get that reduced rate! SO MUCH FUN!
They do have height and weight restrictions; I think 6'5" and 250 lbs. Not sure about minimums, but I do know they allow minors to partake if they have a valid drivers license and parental approval. Full disclosure, I'm 6', 200 lbs and it was a pretty tight fit... and you aren't even in a proper seat, just a foam stadium cushion on the floor of the car. So you move around (a lot) and your mid legs take a beating (bruises and soreness didn't go away for over a week) from the bulkhead and gear change lever.