To break it down further, cost for racing (entry, gate, fuel) 12 OMA races was $1,213 = $101 per race = $8.42 per lap (11 laps)
My personal cost for open practice (entry, fuel) all year was $555 for 16 practices = $35 per practice = $1.50 per lap (roughly 25 laps per practice)
There is a lot to...