Found this on my local newspaper, Harvey Norman Indooroopilly QLD store. You might want to try a price-match in OW, your local HN or JB-HIFI.
Acer eMachines Laptop
Intel Core i3 2.4 GHz
2GB Ram
320GB Hard Disk
DVD Super Multi Drive
15.6" Widescreen
Windows 7 Home Premium
Limit 1 per customer
$577 before cashback, after cashback $498. $79 cashback is via redemption from Acer.
Seems like this one
http://www.shopmania.com.au/shop~online-notebooks~buy-acer-e…
Acer eMachine 34137Intel Core i3 370 (2.4GHz)- 2048MB DDR3 Memory- 320GB SATA HDD- 15.6 HD CrystalBrite WXGA Widescreen- Intel 128MB Dedicated Graphics- DVD Supermulti Dual Layer Burner- Gigabit Ethernet- 802.11b/g/n Wireless- HDMI- VGA- Webcam- 3 x USB- HD Audio- 5-in-1 Card Reader- Dedicated Numeric Keypad- Microsoft Windows 7 Home Premium 64bit. 2 year warranty.BONUS $79 Cashback valid until February 28th- 2011 redeemable from eMachines. Visit www.emachines.com.au to claim.