(1) https://www.nmddata.com.au is a dedicated membership site for liquidation / distressed sales.
(2) https://www.selectpropertyinvest.com.au - you can browse more than 800 listings for free and to get detailed data the membership fee is very low.
(3) The Real Estate Investar uses a search engine style approach giving you a tremendous amount of hits on discount properties that you can filter down very well. Check out the STRATEGY VIDEOS under RESOURCES.