Aliexpress
Click here… to search for Rapoo 8000M Keyboard And Mouse Combo Set on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (23.17 USD): AFfbG10
Coupon (23.94 USD): aff7off
(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): 532a1d, Alibuy91143, dde910, TTxBG10, e18b44, BG3CSUM, bgssaff9
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Price history (for all/most countries) for Rapoo 8000M Keyboard And Mouse Combo Set is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).