The Xiaomi Redmi 10 is already available for purchase online. You can find the phone on AliExpress where the base 6/64 GB version starts at $191/€167, the 4/128 GB model is $215/€188 and the fully-loaded 6/128 GB option is $227/€198. There are two promo codes active today and tomorrow, EOSSAFF13 knocks $13 off the price of the 4/64 GB phone, EOSSAFF18 is an $18 discount for the two 128 GB models. AliExpress also currently has a limited coupon of $10 off on purchases over $100 and there is early bird-pricing in effect too. There are some regional codes too, e.g. PODARIM for Russia....
Source: https://www.gsmarena.com/redmi_10_is_now_available_globally_through_aliexpress-news-50624.php