Shush pt. I'd try Ebay (and not the other option), although I'm not sure if or how regional coding would into the mix since you're from Australia.
Edit: I found one entry on ebay.com.au: http://cgi.ebay.com.au/ws/eBayISAPI....category=11047
However, that seems to be a bit much (read: entirely too expensive) for what's offered. Then again, Sam and Max and DOTT rule.