Hi,
You can try here. I visited there few weeks ago with a friend. They have good collection.
Other car dealers buy from them and then sell it with extra profit.
Pickles Auctions
54 Kingsgrove Rd, Belmore NSW 2192
https://www.pickles.com.au/about/branch-location/sydney
https://www.google.com.au/search?q=pickle car sydney&oq=pickle+car+sydney&aqs=chrome..69i57j0l5.5759j0j7&sourceid=chrome&ie=UTF-8&npsic=0&rflfq=1&rlha=0&rllag=-33928426,151049076,4470&tbm=lcl&rldimm=15482767895118287793&ved=0ahUKEwjQ_uK94JnVAhWKjJQKHcvfDH4QvS4ITjAH&rldoc=1&tbs=lrf:!2m1!1e3!3sEAE,lf:1,lf_ui:3#rlfi=hd:;si:15482767895118287793;mv:!1m3!1d114366.73756343004!2d151.14598093898928!3d-33.915936618043766!3m2!1i955!2i829!4f13.1