So my suggestion to weight payouts according to class size is valid. Lower purses for classes with <10 cars and raise the others. Like I said, it's a complaint I've heard and I can only assume promoters like feedback.
May I make a suggestion. Why don't YOU build YOUR car to fit one of the other classes. !50.00 to race two days for 1500.00 sounds like a deal to me as I go to other races on the East coast and know what it costs. Some cars cost way more to race than others and have more fan appeal. I personally think the "street class" pays to much but I'm not going to cry about it.