Hey Staffo
I have bought form this place before on one occassion http://www.amcmotorcycles.com/index.html
But I do seem to have trouble with their web site at tmes.
Sorry but thats the only place in Aus that I have actually bought from other than my stealer.
You gotta admit the American sites have so much stuff it's amazing, but like you say the postage is the killer.

Stewart Chrome Accessories for 'Modern Classic' Triumphs