With the eBay store 15% off sale today (https://www.ozbargain.com.au/node/160631) there are some good phone bargains around. This seller has great feedback and with the 32GB Metallic Black listing has over 400 sold. They appear to be a pretty big store but can't vouch for them myself.
Don't forget to claim your 2% Cash Rewards(cashrewards.com.au) cash back.
As pointed out by @highdealer you can grab the LG G3 D855 4G LTE 16GB Gold for $466 HERE(ebay.com.au) Black for ~$479 HERE(ebay.com.au) and White for ~$474 HERE(ebay.com.au)
The 32gb would be the better option, 3gb of ram vs 2gb.