Gearbest is selling Bluboo X550 for US$121.90. You should apply promotion code 'GBEBLU' at the checkout (before you pay!).
I have never bought any Chinese Android phone so I'm not sure about the quality but for ~AU$160 I don't expect a lot though.
Features:
5.5 inch IPS HD 720x1280 screen
•Dual SIM dual standby, one standard SIM, one micro SIM
•OS: Android OS 5.1
•CPU: MTK6735 64bit Quad core
•Camera : Front camera 2.0MP Back camera 8.0MP AF with flash light
•2GB RAM + 16GB ROM
•GPS: GPS, AGPS, GLONASS
•Bluetooth: 4.0
Networks:
2G: GSM 850/900/1800/1900MHz
3G: WCDMA 850/900/2100MHz
4G: FDD-LTE 800/1800/2100/2600
The Lenovo K3 Note looks like it might be worth the extra BTW.
Blooboo however has a huge battery though (5300mah, claimed manufacturer, though we know China-droids always lie about capacities). Could be interesting choice.