GB, I am a Gong Boy too!
Back to the topic, Bmouth has recently published an interesting article regarding "buy" versus "rent then buy" - which is seen as a proxy "buy with (excessive) interest".
The article points out that the risk of ACCC involvement is something not to be discounted.
The artcile is here....... and does not appear to be copyrighted.
http://www.iifunds.com.au/bristlemouth/rent-try-buy-youre-better-loan-sharks