Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (557.99 USD): Tabby20
Coupon (569.99 USD): BG44e901
Coupon (576.59 USD): Terence
(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): ADMITAD2212, 2022ACTIESNL, BGa9d866
(there’s a little possibility that old coupon will work)
Price history and price alert
Check out price history chart (for all/most countries) for T-Bao TBOOK X11 14.1 inch Ryzen 5 3550U 8/512GB Laptop.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).