Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Hong Kong.
Link: Banggood product page
Coupon (294.00 USD): BGBF10TL
Coupon (294.00 USD): Email5
Coupon (384.99 USD): 7d18f7
(CouponsFromChina.com tip: apply it 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): BGCD10TL
(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 Xiaomi Mi 10T Lite 5G 6/128GB Global.
Price records source(s): Banggood
Click on image to enlarge.
You can set price alert (for Banggood).