The price dropped today for this card by around $100 USD. It was previously around $389. It isn't the OC version or Ghz version but still a solid card nonetheless.
Might be worth waiting for the R9-280x being released tomorrow or the day after, but with Australia tax added it will probably be ~$340.
edit: Also forgot to include that there is a mail-in rebate for international orders for $20 until 31st Oct which effectively lowers the price to $268
Also, this card has 4x displayport so you can get eyefinity straight out of the box if you have displayport monitors..