Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Xiaomi Mijia CJSJSQ01DY Evaporation Air Humidifier [EU] (-3 USD)
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
Coupon (122.44 USD): Terence
(CouponsFromChina.com tip: put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGHOMEAPP13, BGHOMEA13, BGCJSJSQ01DY, bGhOnEy10, BG01DYXMCZ, BGQ01DYCZ, 7d18f7, 13f142, BGCuponation10, BG10OFFAFF, BGwhielabel, 7bcdf9, BG10OFFAFF1, 6GSGIT, BGd19318, BGHW141, BGHU01DY, BG452d1b, 00c906, BG968944, ADMITAD2212, BGbd1846, BGa82b56, 2022ACTIESNL
(probably won’t work, but you can try them out)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Xiaomi Mijia CJSJSQ01DY Evaporation Air Humidifier [EU] (-3 USD)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi Mijia CJSJSQ01DY Evaporation Air Humidifier.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).