Mods, feel free to delete if this post is deemed inappropriate.
There is an auction on a certain site at present for a Reg Barber 58mm flat tamper.
They seem to have a number of them.
The cost is pretty much the same as you would pay to get it delivered from the US site, but this is coming from Melbourne.
The seller is NOT the official AU distributor according to the RB web site, but the price is cheaper than ordering from there.
I would add that I have a Greg Pullman tamper (from Australia) and think it is the bees knees, but I thought this was interesting.