ROM 128GB, Up to 2.3 GHz, Resolution 2400*1080 pixels, Display Size 6.67 Inch Dot Drop Full Screen Display, OS MIUI 10, GPU Adreno 618, 8nm process technology, RAM 6GB, CPU Snapdragon 720G Octa core processor.
Go down and check coupons out. Remember to check price history if it is available. 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 and price update (UTC):
Banggood
Banggood warehouse is located in Hong Kong.
Link: Banggood product page
1. ($256.07): BGN9S128
2. ($292.99): Email5
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGMMF402, BGN59S128, BG5N9S128, BGX9S8ES, 7d18f7, BG79S200, BG7N9S, BG7N9S128, BG8N9S6, BG8N9S6JP, BG8RN9S6, BG9N9SANN, BG16R9N9S, BG11N9S6, BGD11N9S, BGD11N9S128, BGDON9S128, BGWPN9S128, BGDBFN9S, BGBFIFN9S2, BGBFN9128EE, BGBFN9128UK, BGBFN9128ES, BGBGLTN9S128, BG12N9S, BG12N9SS, BGGMN9S, BGGMN9S100, BGBR01N9S, BGRN9SPD, 13f142, ADMITAD2212
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. Hong Kong – Xiaomi Redmi Note 9S 6/128GB Global ($-3)
2. Europe – Xiaomi Redmi Note 9S 6/128GB Global [EU] ($-3)
Price history and price alert
Price history (for all/most countries) for Xiaomi Redmi Note 9S 6/128GB Global Special Version is here. The lowest price was: $243.27.
Price records source(s): 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)).