Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. I am tired of searching coupons, but I found one for you…
Link: Banggood product page
Coupon (45.34 USD): 13f142
(CouponsFromChina.com tip: 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
Old coupons (from the oldest to the newest): BGDEMDH206, bgshOOp10, BGHome15%, BGHOMEAPP13, BGHOMEA13
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for Deerma DEM-DH206 Electric Kettle 0.6L.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).