ASUS Y406UA8250 i5-8250U 8/256GB Laptop (Banggood, Aliexpress: up to 3.4GHz, 14.0 inch FHD IPS Screen, 8GB DDR4 RAM for Advanced Multitasking, Intel Core i5-8250U Quad Core 1.6GHz, Intel HDGraphics 620, 7.4V/5000mAh 7.5 hours video playing time, 256GB SSD Storage Capacity (the best price with coupon)).
Basically copy coupon, view price history or create e-mail price alert. 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 coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($722.60): aff7off
2. ($756.99): Wholesale20
you should apply the coupon 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): 401BG1445406, BGASUS2, BGAS406
(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 ASUS Y406UA8250 i5-8250U 8/256GB Laptop. The lowest price was: $659.99.
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)).