Price history, coupons and price alert are available on this page. What is best price?
Model: QT-JS1904, Power: 28W, Water Tank Capacity: 5L, Running Time: 16-36h, Brand: WIEKURT, Voltage: 100-240V/50-60Hz, Max Moisture Capacity: 300m/h
Aliexpress
I could not find it on Aliexpress. 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. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
1. ($89.99): 13f142
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGWKSTHM, bgshOOp10, BGHome15%, BGHOMEAPP13, BGHOMEA13, 7d18f7, BGCuponation10
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for WIKURT QT-JS1904 UV Sterilization Humidifier 28W 5L.
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)).