The law doesn't work on generalities, it needs specifics.
I do note there are many other sites that already do what you propose such as staticice.com.au, shopbot.com.au, getprice.com.au etc so I suspect if you are scraping generic information and prices you are OK. There's even a web site listing the comparison websites List of Price Comparison Sites - OzBargain Wiki
But you get actual advice from a lawyer if you want a better idea.
Many years ago I advised a client not to based on the Terms of Conditions of the target websites which had no scraping clauses. Im not sure if the position has changed or whether the site owners see a benefit to allow it and therefore do not prosecute.
The ICE TV case was about them copying program guide data and was a claim to copyright infringement. The courts held that there was no copyright in the program and it was not copied in any case. The OP could get in trouble, not only on the issue of copyright if it was found to subsist and be infringed, but also in respect of breach of contract for breaching those often overlooked terms and conditions linked to at the bottom of the website pages. Whether those terms are enforceable would be the real question and I am unaware of any decisions in Australia that have found them to be.