Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Xiaomi Deerma DEM-NF30 DEM-NF03 Portable Heater (-3 USD)
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. This is new product in my database, so I don’t know if this price is good.
Link: Banggood product page
Coupon (19.79 USD): BG10OFFAFF
Coupon (20.99 USD): 13f142
(CouponsFromChina.com tip: coupon code has to be applied in shop’s 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): 920647, 502C6B, vipupgrade8, fea559, d8f2bb, BGDEER05, BGss8%hl, bgssaff9, AFfbG10, BG5131, BGBFAFF2019, BGCITYADS2019, BGNF03, BGDERHT, 0e7f33, FBCOUPON1, BGHome15%, BGDEMNF03, BGRDEMNF03, BGDEMNF03CZ, BGHOMEA13, BGCuponation10, BGwhielabel, BG10OFFAFF1
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Xiaomi Deerma DEM-NF30 DEM-NF03 Portable Heater (-3 USD)
Price history and price alert
Not enough data to show price history chart… 16.99 USD is the only recorded price. It was not cheaper than that since we have saved it in DB.
You can set price alert (for Banggood).