Aliexpress
Click here… to search for Xiaomi Redmi 10 6/128GB G88 Global on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Hong Kong. One coupon is available. Cool!
Link: Banggood product page
Coupon (201.48 USD): BG8ReviTrage
(CouponsFromChina.com tip: paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BG6cf281, BG5fc940, BG6e495a, BGbb9073, ADMITAD2212, 2022ACTIESNL, Terence, Cuponation9, BgGoodie9
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Price history (for all/most countries) for Xiaomi Redmi 10 6/128GB G88 Global is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).