Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. There is one great coupon!
Link: Banggood product page
Coupon (1029.99 USD): Wholesale20
(CouponsFromChina.com tip: put item in your cart and apply coupon code there 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): BGASUS5, BGAS656
(there’s a little possibility that old coupon will work)
Price history and price alert
Do you need price history chart (for all/most countries) for ASUS YX560UD8550 i7-8550U 8/128GB/1TB GTX1050 Laptop? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).