hire karts will cost you $40 for 15mins or $70 for half hour. $35 for day with your own kart if you are a memeber of the track. Second hand rotax will cost you between 3 & 4k, then suit , boots, gloves rib protector,helmet, tools, jerry kans, trailer, spares etc. 8k. i have raced for two seasons. tyres are $250 a set and to be competative you have to replace them after every 2 meetings. $35 for 10litres of fuel plus $25 for oil, which will do 40litres, chain lube etc etc. it gets expensive, unless you are just going out socially on practice days as thats cool, otherwise there is always some over-ambitious idiot trying to make a idiotic pass that ends up costing you $100s to repair.
but it is awesome fun......