organic matter, bacteria, The filtering coverage area: 33 square meters The filter can remove 99.99 percent of PM2.5 particles, etc. Recommend replacing cycle: 3 – 6 months, heavy metal.
Basically copy coupon, view price history or create e-mail price alert. 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 coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($93.50): 8Couponsde
2. ($93.50): MVC8SPRING
3. ($95.53): BG00c906
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGair1S, bgchinafest, BGnowyfiltr, BGBFAFF2019, BGCITYADS2019, BGHOMEAPP, BGMPB2020, bGhOnEy10, BGAFF7OFF, BGSS10%SW, bgshOOp10, BGXMfilterS1, BGHome15%, BGHOMEAPP12, BGS1XMCZ, BG9XMfilterS1, BGHOMEAPP13, BGXMS1CZ, BGXMFLS1, BGHOMEA13, BGMJAP11, BGS1APFCZ, BGXMS1FLCZ, 13f142, BGAPEHGD, BG10OFFAFF, BGwhielabel, BG6a088e, BG2dd9ee, BG10OFFAFF1, BANGGOODSD, BG9dc3df, 00c906
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Original Green Xiaomi Mi Air Purifier 2 Filter Enhanced Version [EU] ($-3)
Price history and price alert
Price history (for all/most countries) for Original Green Xiaomi Mi Air Purifier 2 Filter Enhanced Version is here. The lowest price was: $23.99.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
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)).