Xiaomi Mi9T 6/64GB Global Black (Banggood, Aliexpress: Display Size 6.39 Inch AMOLED, 4000mAh(typ), GPU Adreno 618 max to 610MHz, MI Turbo Yes, Game Turbo Yes. 2.0, 8nm, Resolution 2340*1080 Pixel, ROM 64GB, 3900mAh(min), OS MIUI 10, RAM 6GB, CPU Qualcomm Snapdragon 730 Octa Core (max to 2.2GHz) Kryo 470 (the best price with coupon)).
You can create price alert here, copy coupons and view price history. What is 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 price update (UTC time):
Banggood
Banggood warehouse is located in Hong Kong. I found coupon for you. Check this out.
Link: Banggood product page
1. ($239.99): BG59T
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): BG12M9T4, BGXX9T64, BGIssamXRM9T1, BG1M9T, affiliate6, BGMI9T664, aff7off, BG7M9T, bgssaff9, BG9T64PL, BG79T64, BG79T64EU, BGPURE9T64, BG89T64, BG8MM9T6, BG8MM9TT, BG8M9GSE, BG8M9TCC, BG9M9TC, BGM9T10, BGPUREMI9T64G, BGM9TGCL, BG119T6, BG59T6, BGBF9T6, BGBF9T64, BG129T64, BGX9T64, BG12M9TCL, BG029T6, BGEUmi9T, BG29TCL, BGITmi9p, BGXMT901, Email5, BG39T6, BG49TE, BGAFF10OFF, 7d18f7
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 3 another warehouse/versions!
1. Hong Kong – Xiaomi Mi9T 6/64GB Global Blue ($-3)
2. Hong Kong – Xiaomi Mi9T 6/64GB Global Red ($-3)
3. Europe – Xiaomi Mi9T 6/64GB Global [EU] ($-3)
Price history and price alert
Price history (for all/most countries) for Xiaomi Mi9T 6/64GB Global Black is here. The lowest price was: $239.99.
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)).