Model: MJJSQ03DY, Power: 40W, Spray Volume: 450ml/h, Noise: ≤39dB, Voice Control: Yes (Only supports Chinese version), Water Tank Volume: 4.5L, Voltage: 220V/50Hz, Working Time: 10-25h, Purification Method: UVC-sterilization + Soft Water Resin Filter, APP Control: Yes, Spray Volume Gear: 3gear, Constant Humidity Mode: 40-70% + Over Humidity Protection.
Basically copy coupon, view price history or create e-mail price alert. 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 China.
Link: Banggood product page
1. ($127.50): BG1efeb0
2. ($128.89): Terence
3. ($128.89): 2203ActiesNL
4. ($130.27): 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): bgshOOp10, BGMJJSQ03DY, BGHome15%, BGHOMEAPP13, BGHOMEA13, bGhOnEy10, BGQ03DYRS, 7bcdf9, BGCuponation10, BG10OFFAFF, BGwhielabel, BG10OFFAFF1, 6GSGIT, 00c906, ADMITAD2212, 2022ACTIESNL, Tabby20
(these coupons are old, so probably won’t work)
Price history and price alert
Price history (for all/most countries) for Xiaomi Mijia MJJSQ03DY Humidifier S 4.5L is here. The lowest price was: $92.64.
Price records source(s): 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)).