Gentlemen,
U may be interested to know that Sorbothane Inc is represented in Oz. They sell 10mm and 6mm thick sheets, 500mm x 500mm - cost is $87 and $67, respectively (plus GST plus shipping).
They also have sorbothane circles, about 45mm diam, which would be good for sitting power supply toroids on.
Peter Chrysostomou is the contact on 03-9466-2455.
His email is: peter@sorbothane.com.au
He's very helpful.
Regards,
Andy