Touch Points Capacitive 10 Points, Resolution 1080*1920 FHD, Type LTPS, ROM 32GB eMMC5.0, OS Android 5.1, Card Extend Support Micro SD card up to 128GB extended, Display Size 5.5 Inch, 1.5GHz, RAM 3GB LPDDR3, Octa Core, CPU MSM8952 Snapdragon 617, Panel Technology Multi-touch.
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 and price update (UTC):
Banggood
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment.
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): 10BGV5, 11BGZTE, 1225CAR, INV5G, BGPAYPALSS, aff7off, 10BGV5G
(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 ZTE V5G-K3DX 3/32GB Silver. The lowest price was: $70.39.
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)).