Resolution 2340*1080 Pixel, Display Size 6.39 Inch AMOLED, GPU Adreno 640, ROM 128GB, Game Turbo Yes. 2.0, RAM 6GB, OS MIUI 10, Battery(Built-in) 4000mAh(typ), 3900mAh(min), (1×2.84GHz + 3×2.42GHz + 4×1.80GHz), MI Turbo Yes, AIE 4th Generation AI Engine, 7nm, Kryo 485, CPU Qualcomm Snapdragon 855 Octa Core (max to 2.84GHz).
Check coupons or create price alert down below. You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Hong Kong. You can get coupon down below.
Link: Banggood product page
1. ($442.99): Email5
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BG19TP, BG29TP8, BGM9TP128, BG9TP128, BG9TP1UU, BG9TP50, BG9TPRO, BGMI9TEU3, BG9TP6, BGplmi9tp128, BG9TPCL, BG9TPCL2, BG9TP128U7, BG9TPCL3, BG9TPCL4, BGMI9TPRO128B, BG9TP6D, BG109TP, BG119TP, BG9TRGG, BG9TP6128, BG9TP855, BGD119TP855, BGHU503, BGPL119TPRO128, BG59T128, BGBFX9T128, BGBFSP9TP, BG9TPEE, BGD129TP, BG129TPBR, BG29TP, BG29TPCL
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 3 another warehouse/versions!
1. Hong Kong – Xiaomi Mi9T Pro 6/128GB Global Black ($-3)
2. Hong Kong – Xiaomi Mi9T Pro 6/128GB Global Red ($-3)
3. Hong Kong – Xiaomi Mi9T Pro 6/128GB Global White ($-3)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi Mi9T Pro 6/128GB Global Blue. The lowest price was: $329.99.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).