Rated Air Volume: 80m³/h, Clean Air Volume: 79.2m³/h, Wireless Connection: Wi-Fi IEEE 802.11b/g/n 2.4GHz, Rated Frequency: 50Hz, Noise: ≤36dbB, Rated Power: 310W, Rated Voltage: 220V, Applicable Area: ≤28.6m², Model: MJXFJ-80-G3.
Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Europe 
. Too bad there’s no coupon right now in Banggood. I don’t know if this is a good price – number of records in my database is too low!
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BGHome15%, BGMJXFJ, BGHOMEAPP13, BGHOMEA13, 7bcdf9, BGCuponation10, BG10OFFAFF, BGwhielabel, BGACZXMC, BG10OFFAFF1, BG3fab32, 6GSGIT, 00c906
(these codes were not working in latest coupon update, but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Xiaomi Mijia MJXFJ-80-G3 Wall-Mounted Air Purifier ($-3)
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: $283.49.
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).