Harvey Norman offers the Microsoft Lumia 735 Windows Smartphone for $297, normally around ~$599. There doesn't seem to be too many selling this phone but next best price I can find is $367 + Shipping at Mobicity.
Display Type LCD Capacitive Touchscreen
Display Size 720 x 1280 pixels, 4.7 inches (~312 ppi pixel density)
Processor Type Quad-Core 1.2GHZ
Storage 8 GB
4G LTE
Memory Card Type Micro SD Up to 128GB
Camera 6.7MP
Secondary Camera 5MP
Battery Type Li-Ion 2200 mAh
Standby Battery Life Up to 25 days
Talk Time Battery Life up to 22 hours (2G) / up to 17 hours (3G)
Via Geekzone
Now $247 until Monday :)