....which makes it really interesting for a purchaser using a Buyers Agent - where the purchaser has not been introduced to the property by any agent listed on the front page of the contract (sometimes we get a key from the listing agent) and where the BA has been introduced to the property from...
Any of these commission claims that go to court these days - the "introduced to the property" clause gets put aside and the determination is made on which agent was "the effective cause of sale".
http://www.reinsw.com.au/Effective-Cause-of-Sale-JLMar2011/default.aspx