Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Deerma F628S UV Humidifier 5L [EU] (-3 USD)
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
Coupon (56.20 USD): 00c906
(CouponsFromChina.com tip: apply code in your basket (cart) 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): BGF628S, BGF628SPL, BGDF628S, BGF628SDR, BGF628SH, bGpAnDacHeCk, BGAHOFF, BGMF628S, BG628S, BGHOMEAPP, BGDE628S, BGDCCJP, BGF628SYT, BGDMF28S, bGhOnEy10, BGF628SCZ, BGDT628S, BGD628S, BGSS10%SW, BGDERF28S, BGDHUMCZ, BGF628SCZ8, BGDF628SCZ8, BGDF628SCZ, BGDEF628S, BGDEMHV, BG9D628S, BGCZFRSE502, BGF628SES, BGDMF628S, BGHOMEA13, BGF628S11, BGCDC016, BGCZF628S, BGCZESF628S, 7d18f7, BGF628SDE, 13f142, BGF628SCZES, BG628SFER, BGCuponation10, BG10OFFAFF, BGwhielabel, BG10OFFAFF1
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Deerma F628S UV Humidifier 5L [EU] (-3 USD)
Price history and price alert
Do you need price history chart (for all/most countries) for Deerma F628S UV Humidifier 5L? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).