Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Hong Kong. I don’t think there is an active coupon right now – at least in my database.
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): BGEUAM70, BGEUA617, 6GSGIT, BGEUAMD37, BGAlerabatLP, BGissamR3070, BG62f6b7, ADMITAD2212, 2022ACTIESNL, BGe8260b, BGAlerabat1, BGAMD3070, Terence
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Here is price history (for all/most countries) for ThundeRobot ZERO 16.0 inch Ryzen 7 5800H RTX3070 16/512GB Laptop.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).