well the whole point for the $5000 fee for international investors is to fund investigations into purchases which were cutting corners/illegal.
"The higher application fees and penalties are expected to fund an improved enforcement of the current foreign investment rules.
"We need to make sure that all foreign investors are following the rules, and that those foreign investors who break the rules are not able to profit from breaking the law," the Prime Minister, Tony Abbott, said in launching the paper."
http://news.domain.com.au/domain/real-estate-news/foreign-buyers-set-to-be-hit-with-steep-fees-to-buy-australian-property-20150225-13ob2a.html