Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – Huawei Honor 8X Max 4/128GB Black (-3 USD)
2. China – Huawei Honor 8X Max 4/128GB Blue (-3 USD)
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. So I have checked for active coupons (all category coupons and old ones), but there was no working coupon in Banggood.
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): 9BG8XM128, 9BG8XM128ES, PCNETWORK, aff7off, bgssaff9, 7d18f7
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – Huawei Honor 8X Max 4/128GB Black (-3 USD)
2. China – Huawei Honor 8X Max 4/128GB Blue (-3 USD)
Price history and price alert
Here is price history (for all/most countries) for Huawei Honor 8X Max 4/128GB Red.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).