Total speculation on my part...I think I've seen the average joe racer's car go for $4-$7K for the CB.... so my guess would be $25-$30K? I have to guess $200K for a season.
I think 8 or more years ago, I asked Keith at the Oval Nationals, I think he said it was $300k per division for the season, including testing. (he was running both midgets and sprints). I think it was $5k a night in sprint car, and he said it was a bargain as TSR had a million $ budget.
I would imagine, the prices haven't gone down. But somehow many of the best drivers find the $$$$ for the best rides
Here's the odd thing, never asked about the experience of the driver .....