I have been checking these out as well. The price for the pump is cheaper in the states, but then you have to add shipping.
Bluecity motorcycles in Adelaide have them for A$409.95 and they offer free shipping. On top of that you can order online. They are pretty good and ship as soon as they have them in stock.
I contemplated a second hand one, but it would probably be only a short term fix, if you can find one. Don't let it go too far or you can damage the timing belt, as I found out.
Good Luck
Cheers
Grumpy