It is $7 to practice, 10:30 - 4:30 ( I think that's the hours) $12 to race (6:00 - about 9:00)
If you are there for practice, and pay for that, the $7 is deducted from the $12. Hope this makes sense... lol

Basically it is $12 for all day (practice and race)
$7 just for practice