Try
www.pickles.com.au. click on vehicles and search jeep... you can even bid online. I have bought cars from the other side of the country. Have bought 12 cars at auction. Keep them for a couple of years, then sell them for what you bought it for.. If you go to
www.redbook.com.au and do a search of the car you want, the 'Trade price' is what it would roughly go for at the auction. Sometimes cheaper, especially if it's a Jeep as Dealers don't want them...