Hi Kaneos,
Depending on what you are after you should be able to find something in Perth. If you want something a bit special there are always some going down bunbury/albany way.
Give Martin Falconer, Tuneright, a call as he usually hears about cars coming up for sale before they do, so may be able to point you in the right direction.
What do you want to do with the car and what is your budget? It's getting hard to find a clean body car without mods or fully restored, ie, big cash (25-30k) so you may have to settle for something with still some rust to get one on the road cheap.
As mentioned above, 10k will get you driving bit it wont be a perfect car by any stretch.