CPU: Snapdragon 870 5G (7 nm) / Octa-core (1×3.2 GHz Kryo 585 & 3×2.42 GHz Kryo 585 & 4×1.80 GHz Kryo 585), ROM: 256GB, Card Extend: No, GPU: Adreno 650, OS: Android 11 / OxygenOS 11, RAM: 12GB.
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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. Coupons for OnePlus 9R 5G 12/256GB Global ROM? Nope, there’re no coupons in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGOP9R256D, 13f142, BG9R1227, BG048b16, BG5061b3, BGOP9R256725, BG20eae8, BG392bb0, BG582304, BG3d69cb, BG72b51b, BG37d264, BGd55031, BGbb264b, BG187746, BG5b4cdf, BG5a4f62, BGefdc99, BG56ad07, BGc99d64
(probably won’t work, but you can try them out)
Price history and price alert
Check out price history chart (for all/most countries) for OnePlus 9R 5G 12/256GB Global ROM. The lowest price was: $489.
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)).