Aliexpress
Click here… to search for Xiaomi Smartmi Ultrasonic 2.25L Humidifier on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. There are no active coupons for this product, but the price is pretty low isn’t it?
Link: Banggood product page
Price: -3 USD
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
Old coupons (from the oldest to the newest): f8aaf1, 2c6506, 715556, BGSHTYKR, PICODICOM, BG15SMI06, BGAMINI06, 2019SPEDM, BGss506, 7d18f7, BGSMTHM, BGSHUM, Email3, BGSEUM
(probably won’t work, but you can try them out)
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi Smartmi Ultrasonic 2.25L Humidifier? There we go.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).