There are quite a few online retailers in Australia that ship internationally - and will charge you 10% less than the quoted price as they do not need to charge GST(VAT) on the sale.

Try www.mrmobile.com.au, www.mobicity.com.au, www.smoothmobiles.com.au

Most of the networks and larger bricks-and-morter retailers in Australia don't ship internationally, but no need to go through any dodgy third parties and take risks to get one. The websites above are all well known and been around for a while.