Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Hong Kong.
Link: Banggood product page
Coupon (1339.99 USD): BG02fea3
Coupon (1701.89 USD): Terence
(CouponsFromChina.com tip: you should apply the coupon 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): BGEUAM3060, BGZEEU20, BGZECN20, 6GSGIT, BGAEU306, BGTHEU16, BGAM540, BG1c5600, BGd57d2e, BG4e62d0, 2022ACTIESNL
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Price history (for all/most countries) for ThundeRobot ZERO 16.0 inch Ryzen 7 5800H RTX3060 16/512GB Laptop is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).