hello, i am semi new to this vaping. i have a ego, and i enjoy it alot, but thing is i need (want) more vapor. so i am looking into variable voltage set ups. i really like the provari, but its too much $$$. i have my eye on "variable voltage tube (vvt) kit, from Silver Variable Voltage Tube (VVT) Kit - Ecigma Electronic Cigarettes its under $40. yeah i know thats a cheap price. i tried to look for reviews on youtube of it, but to no avail. only video i found was one made by ecigma. but i want to know from fellow vapers if this is a good unit or not... the thing that trips me out is it looks just like a volcano tube, so maybe its good?? idk please help.. has anyone ever used or heard of this device...? $40 for 2 batteries, charger and everything.. i dont want to pass this up.