Hello Darren, unfortunately as the bulk of imported cars into Australia is either from Qld or SA, and the rest in WA, you have to physically travel to view, then buy, transport to NSW, possibly engineer (sometimes but not always) and register vehicle.
There is an upside to this in that where some won't, then they will have to pay a premium for local cars. Don't be discouraged, as this may work to you're advantage. I'm proof of that.
Michael