Process technology 14nm, Display Ratio 16: 9, Cache 6MB, Graphics Capacity 2G, Li-on polymer battery, Battery Type 7.6V / 5000mAh, Hard Disk Memory 256GB SSD, RAM 8GB, CPU Type Intel I5-8265U, Graphics Chipset NVIDIA GeForce MX250, Screen resolution 1920x 1080 (FHD), Screen size 14 inch.
Just check coupons out (with price alert and history). 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 code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($589.99): BGXMRM9
2. ($679.99): Wholesale20
coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGRM430, aff7off, BGXM0717, BGXMRED14, BGRM7521, affiliate6, BGRM265U, BGXMRM430, BGXMRM4301, BGXMRM2, BGXMRM4, BGXMRM5, BGXMRM6, BGXMRM8
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi RedmiBook 8/256GB i5-8265U MX250 Laptop. The lowest price was: $589.99.
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)).