I've been on the look out too - everywhere I know is out. It seems it was bought up by every man and his freezer months ago.
It was an expensive item to begin with, so expect the price to get a bit silly.
Who's your local store? I move into Adelaide in about a month, to go to University. I've only been to Photographic Wholesalers and Ted's, and James Place Cameras before they moved.
Total Photographics in Kent Town.
They had a couple of rolls of EIR for what seems like forever. Didn't check last week when I was there, but could still be in stock. Toby or Neil should be able to answer any questions you might have.