Kartboy USA won't ship to Australia because there are Australian distributors, and the Aussie distro's are double the price from the US. I purchased mine from
www.cvrmotorsports.com The dollar is rising every day so now is a great time to purchase. Mine came to $158 USD for all 4 plus shipping, and landed in about a week.
http://www.cvrmotorsports.com/store/...roduct_id=3043
I'll definately be buying more from them.