Two deals from Ninja Buy (PC Byte) with a record low price on the Xiaomi Air Purifier 4 which was previously the cheapest at $209 and the Viomi S9 UV with Auto Empty hasn't been this cheap since early 2022.
The Xiaomi Mi Air Purifier 4 offers better purification, more coverage and a more accurate air quality sensors over its predecessors. A comparison of the 3H and 4 can be seen in this image and a comparison between the others in the 4 series in this image.
The Viomi S9 UV Robot Vacuum Cleaner features powerful suction of 2700pa, auto empty and charging station, LiDAR floor mapping with 5 floor maps stored, 5200mAh battery, 3L capacity dust bag, water tank with mop attachment and UV sterilisation.
Correct me if I'm wrong but didn't Xiomi start using DRM in their filters? I recall reading that they silently started rolling out filters with RFID tags and that aftermarket/cheap replacement filters were hard to find or nonexistent. Does this model use filters with DRM?