If you live in Melbourne, check out the Oakley shop in Melbourne Central, or Capital 17 on Hardware Lane. I was in the market for some red pants myself a while back, can confirm both stores have pants 10,000+ waterproofing. Also check out backcountry.com, considering the American dollar at the moment, the conversion can save you hundreds of dollars, regardless of shipping.
"I can guarantee you if you were a native of australia, you would like the american government better." - jumister5889