up to 4.5GHz, 16GB 2133MHz LPDDR3 RAM 512GB Expandable SSD, Windows 10 OS home Installed (Chinese Version), Dual WiFi 6 and Full-featured Type-C, 11.5h Battery life with 41Wh Large Capacity, Intel i7-10510Y Quad-Core Eight Thread 1.2GHz, Fn+ K Keys Three Smart Switch Modes, 1KG Lightweight Full Metal Cases, 13.3 inch 100% sRGB 89% Ratio 16: 10 IPS Screen with 2560x 1600 Resolution, Intel UHD Graphic 615 GPU up to 850MHz Frequency.
Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
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 China. Only one coupon available!
Link: Banggood product page
1. ($1098.99): 13f142
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BGXMAIR1, Email5, BGHALLOWEEN, BGXMAIRK1, BGXMAIRK2, BGXMAIRK3, BGXMAIRK4, BGXMAIRK5, BGXMAIRK6, BGXMAIRK7, 7d18f7, BGXMAIRK8, BGXMAIRK9, BGXMAK11, BGXMAK12, BGXMAK13, BGXM21NY4, BGXMAK14, BGXMAK15, BGXMAK16, BGXMAK17, 451feb, BGXMSP12, BGXMY71, BGXMY72, BGXMY76, BGXMY77, BGDEXM658, BGXMY78, BGXMY79, BGXMY80, BGXMY82, BGXMY83, BGXMY84, BGXM50OFF2
(these coupons are old, so probably won’t work)
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi RedmiBook Air 13.3 i7-10510Y 16/512GB? There we go. The lowest price was: $779.99.
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)).