Aliexpress
Click here… to search for Xiaomi RedmiBook Pro 15 2022 Laptop 15.6inch 3K R5-6600H 16/512GB on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
Coupon (1000.99 USD): BgGoodie9
(CouponsFromChina.com tip: just apply this code 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): hoNEYbGdeAlS, BGb0ce86, BG8676c9, BGJUNEGSG9, BG58c7fb, BG96a91b, BG7555f1, Cuponation9, 9OFFSUMMER, BG84a7df, BG5fe244, COUPONSDE1wk
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Here is price history (for all/most countries) for Xiaomi RedmiBook Pro 15 2022 Laptop 15.6inch 3K R5-6600H 16/512GB.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).