Aliexpress
There’re some similar items on Aliexpress in my database. There may be some other items though.
Here are coupons that you can use.
Latest price update (UTC time):
Price history and price alert
Price history (for all/most countries) for Xiaomi Redmi Note 8 Pro 6/64GB Global White [EU] is here.
Price records source(s): Gearbest
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You can set price alert (for Banggood).