Just check coupons out (with price alert and history). You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
![8Pcs Xiaomi Mijia T100 Replacement Brush Heads [NOT Original]](https://couponsfromchina.com/wpthumbnails/Resized1005005402787406.jpg)
![8Pcs Replacement Brush Heads for XIAOMI MIJIA T700 [NOT Original]](https://couponsfromchina.com/wpthumbnails/Resized1005005872831092.jpg)
![Air Filter For Xiaomi Air Purifier Pro/1/2/3 [Not Original]](https://couponsfromchina.com/wpthumbnails/Resized1005005589418600.jpg)
![Air Filter For Xiaomi Air Purifier 1/2/2S/3/3H Pro [Not Original]](https://couponsfromchina.com/wpthumbnails/Resized33027252303.jpg)
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Effectively eliminates bacteria, dust mites, PM2.5 particles in the air, replace the filter every 3 – 6 months
Banggood
Banggood warehouse is located in China. There are no coupons for this product in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): f8aaf1, d8f2bb, Accessories, bgssaff9, aff7off, BGfiltrfioxm, BGaDmITAd, bgchinafest, BGXMfilter, BGBFAFF2019, BGCITYADS2019, bGpAnDacHeCk, 2020CNY, BGXMFL, BGXMPU, BGVDay10%off, BGHOMEAPP, BGAPfilter, BGXMFGL, BG303cv, BGTT10, BGAPFLP, bGhOnEy10, BGFILTERCZ, BGSS10%SW, bgshOOp10, BGXMAPFL, BGXMAPFLT, BGHOMEAPP12, BGPXMFILTER, BGHOMEAPP13, BGXMAPFL10, BGMCRFLGAP, BGHOMEA13, BGMCRFLG11, BGMCRFLGCZ, BGMCRFLG, BGMCRFLGDCZ, BGMCRFLGFT, 13f142, BG10OFFAFF, BGwhielabel, BGe37ce0, BG3fa5a2, BG10OFFAFF1, BGbc0ed2, BG24b6a2, BANGGOODSD, 6GSGIT, BG7e51e2, BG3ce7ee, BGHUPART, BGHW133, BG335945, 00c906, BGbb6464, BG946f65, 2022ACTIESNL, BG84578c, Tabby20, BGDC0310, MVC8SPRING
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Original Xiaomi Air Purifier Antibacterial Filter [EU] ($-3)
Price history and price alert
Do you need price history chart (for all/most countries) for Original Xiaomi Air Purifier Antibacterial Filter? There we go.
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)).