Huawei Enjoy 9S 4/128GB Black (Banggood, Aliexpress: Display Size 6.21 inch 19.5: 9, Li-Polymer Battery, 3400mAh (Typical Value), RAM 4GB, CPU HUAWEI Kirin 710 Octa-core, OS EMUI 9 (Android 9.0), ROM 128GB, Resolution 2340*1080, Type FHD+ Capacitive Touch Screen (the best price with coupon)).
Basically copy coupon, view price history or create e-mail price alert. What is 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. ($311.13): Email5
2. ($311.13): bgshOOp10
apply code in your basket (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): 4BGE9S, affiliate6, od7off, BGBFAFF2019, BGCITYADS2019, BGMPB2020
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for Huawei Enjoy 9S 4/128GB Black. The lowest price was: $229.99.
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)).