Aliexpress
There’re some similar items on Aliexpress in my database. There may be some other items though.
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Xiaomi Youpin Deerma DEM-CS10M Mini Dehumidifier | 32.29 USD | Paste “FUES03 or OUTDOOR3 or ODFW03” (may not work) |
 |
Xiaomi Youpin Deerma DEM-CS10M Mini Dehumidifier | 36.89 USD | Paste “FUES03 or OUTDOOR3 or ODFW03” (may not work) |
 |
Xiaomi Deerma 350mL Smart Water Bottle | 43.04 USD | Paste “FUES03 or OUTDOOR3 or ODFW03” (may not work) |
More on Aliexpress… Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
Coupon (34.02 USD): bGhOnEy10
(CouponsFromChina.com tip: apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop)
Old coupons (from the oldest to the newest): 502C6B, bf18a5, cf38bb, 511a5d, PICODICOM, 89de58, 919c60, BG209FC, BGDEER05, BG2099F450, bgssaff9, BG19demf450, BGHU283, aff7off, BG20F450, BGaDmITAd, BG9F450, AFfbG10, BGBinkupon501, BGDEMF450, BGCITYADS2019, BGDER450, BGDEM450, BG23DRA, BGDF450, 2020CNY, BGVDay10%off, BGDEM45, BGHOMEAPP
(there’s a little possibility that old coupon will work)
Price history and price alert
Price history (for all/most countries) for Xiaomi Deerma DEM-F450 4L Air Humidifier Black is here.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).