it's cost me close to 300 bucks so far just to get the stuff for him to try it out. He has tried mine, and said he should look into one, but I know the kind of man he is, plain and simple. If i gave him a vp and he didnt like the flavors, i knew he wouldnt use it. I have 15 different flavors right now for him to try, plus his own tornado, a third battery, and a usb passthrough for the car. Just waiting for fathers day to give it to him. The cartomizers are really a shared thing, i keep one or two for me to try and find my daily vape, and i will give the others to the old man. I figure its an expensive father's day gift, but doesnt a wonderful dad deserve something that will save his life? Besides, he has been smoking for 50 years, has emphysema, and i really want him to be around for my kids to get to know him when i start my family.