it might not be the surname, but surname combined with the time lived in Australia might produce some interesting results.
I have a good 'ethnic' mate that hasn't been in Australia for that many years. Several years ago he got the insight that he should be a real estate agent because a number of his national back ground was looking at buying in Melbourne.
So his angle:
He asks the seller what price do you want?
Ok I will try to get the price you want, that's all you have to worry about.
He then adds around 10%, and tries to sell it.
Seller gets his 'amount'. He pockets 10% markup. ie no 1 or 2% commission, but an effective 10% commission.