Galaxy Geforce GTX 780 3GB graphics card delivered for $766 by PC Case Gear
The next most competitive prices came from Digitalstar.com.au ($837.90), AusPCMarket.com.au ($839.30) and Wacomputers.com.au ($858.34) inclusive of shipping. It's worth noting that many of the websites I visited showed this card as being out of stock, so looks like it's popularity amongst the gaming community is hitting supplies.
Background on the Galaxy Geforce GTX 780:
Nvidia has upped the ante with GTX 780, creating new price points with its new GTX 700 series cards at the top end of the graphics market. This seems like a direct challenge to AMD to take action and offer some competition. This card can happily hold it's own against the GTX Titan (usually in the $1200-$1300 price range), only dropping around 10% in terms of gaming performance, making this a bargain price-wise in comparison. And according to Techradar.com, if you throw in a little light overclocking you can achieve benchmark performance that actually beats a stock-clocked Titan.