This is the best deal I saw from vaper store.  Others sale it on $70 or 60usd , only find in sale it $38.99 , 100% authentic.

I'm glad to show you information about that :

Here comes the mini version eVic Primo - eVic Primo Mini. Powered by a single replaceable 18650 battery, the eVic Primo Mini provides max 80W output. Featuring the new equalizing charging system, it supports 2.0A quick charge capability. The eVic Primo Mini also comes with upgradeable firmware, as well as multiple fashionable features including the real-time clock, custom logo and preheat. The ProCore Aries fits the eVic Primo mini perfectly and brings intense flavor and cloud. 5 colors. 

80W Joyetech eVic Primo Mini with ProCore Aries Kit W/O Battery