You are entitled to a refund of all money you paid EXCEPT for $100 or 0.2% of the pruchase price(whichever is more) if you end the contract in this way.
1240/0.2%=620000
房子62万的话,according to the contract和consumer affair,你应该付1240.
http://www.consumer.vic.gov.au/h ... rty-by-private-sale