Xiaomi Mi Notebook Air 13.3 8/256GB i5-8250U MX150 DARK (Banggood, Aliexpress: NVIDIA GeForce MX150 2GB GDDR5, RAM: 8GB DDR4 Large Memory for High-speed Response, Hard Disk: 256GB PCle SSD for Quick Read Speed, Intel Core i5-8250U quad core 2.5GHz (the best price with coupon)).
Just check coupons out (with price alert and history). You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($619.99): BGPL13th02
2. ($619.99): BGXMAA2
3. ($629.99): BGPUREAIE
4. ($629.99): BGXMA4
5. ($780.19): affiliate6
6. ($809.99): Wholesale20
this code has to be applied 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/5cd
Old coupons (from the oldest to the newest): 10I5150, 1B0GMX8, 1B1G1LAP1, SPL1A1P1, 1B1G142464, 1B1G13064, B12G0364, 1225CAR, B12G0664, BG190664, 19BG2642, BG1912642, BG312642, BG382642, TECH8%, BG212642, BG252642, BG3292642, PCMF2642, bglower2464, BG51464, bg64531, BGXM3286, BGMX1524, aff7off, BGXM32464, BGJL3D01, BGAIRXMPL, BGXMGL79, BGXMGL17, BGXMGL23, BGAIR133, BGXM1333, BGESAIR133, BGXMAL133, BGXM133250, BGXMA464, BGXMA4641, BGXMA3
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi Mi Notebook Air 13.3 8/256GB i5-8250U MX150 DARK. The lowest price was: $619.99.
Price records source(s): Gearbest, 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)).