$50 Sam.
Possibly $5 extra for ANDRA day licence as well (it was last time).
You need a helmet, long sleeves/pants, closed shoes, coolant overflow. Cars are scrutineered, so you must have matching axle pairs for tyres, battery firmly secured etc. They'll let you know if there is anything you need to change/fix.
Sorry about the smoke Danh. Foot slipped. Ash started it.