Seems a fairly decent price, only time Ive seen it cheaper is this deal last year.
Here's a basic overview of the differences between models or check out the full article
- CADR up to 500m³/h, effective coverage area 35–60m²
- PM2.5/PM10 dual-effect laser sensor, detection of coarse particles such as pollen
- OLED display, comprehensive monitoring and real-time display, easy-to-control interface
- 12 months large-area high-efficiency long-lasting filter, three-in-one filtration for high-efficiency purification. Proprietary, not true HEPA
- Smart control with APP, works with Google Assistant and Alexa
- Low-noise night mode, no-glare, no-noise purification
Ive had one of these for the 12 last months or so , works good 👍