Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood).
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): 502C6B, e2bcea, TTxBG10, e18b44, BG3CSUM, AFfbG10, BGBFCR02, BGCITYADS2019, BGVDay10%off, BGAFF10OFF, bGhOnEy10, BgcLuBofErtA10, 13f142, BGCuponation10, BGHONEY2110, BGraton, Cityads2213, BGc0ac93, keyboardMVC, Cuponation9, BGKBandmos12, BG73bf1a, BGff5312, BG975636
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for HK3600 2.4G Wireless Keyboard / Mouse Combo? There we go.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).