External memory: 2TB (not included), Battery: 5000mAh, Screen type: FHD + IPS, Bluetooth version: 5.0, Screen size: 6.4 inch, ROM: 64GB, CPU: Qualcomm Snapdragon 855, RAM: 6GB, SIM card: supports dual nano SIM cards, Camera type: flip camera with dual lens, Camera: 48MP SONY IMX586 + 13MP ultra wide.
You can create price alert here, copy coupons and view price history. What is best price?
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 and price update (UTC):
Banggood
Banggood warehouse is located in Hong Kong. I don’t think there is an active coupon right now – at least in my database.
Link: Banggood product page
Price: $-3
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!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGASZF66, BGASZF64, affiliate6, BGZF664, aff7off, od7off, BGaDmITAd, 7bcdf9, BGCITYADS2019
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Do you need price history chart (for all/most countries) for ASUS Zenfone 6 6/64GB Global? There we go. The lowest price was: $476.99.
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)).