Was looking at air purifiers at Kogan since I purchased the 1S a few weeks ago, and saw a few of them on sale.
The later model incase you are interested:
Kogan SmarterHome™ 5-Stage Air Purifier 3S with H13 Filter (340 CADR) - $179.99 + Delivery (Was $349.99)
Does it generate ozone?
Bit of a small unit at only 16m3