i thought i`d post on this question. the car you see in my avatar can be bought complete with all spares for 20 thou. and we might even throw in the trailer. it ran the ISMA circuit last year. If your a franchised car with ISMA your guaranteed 1000 to start the race. Most races they have are 35 thou. purses paying 3200 to win. As i figure our costs it`s 750 for 4 tires..200 for a barrel of fuel..a 6 hr. one way tow is around 200...pit fees about 120...for a total of 1270 per race........how does that compare with sprint car racing?