I use a Kager Emow, it's about the size of a large cigar. Battery and liquid last about 3 days, heating element lasts about 2-3 weeks. Initial set was around $50 for the kit which included the vape, battery, take and 6 heaters.
It does work, I only smoke about half as much.
The big thing is finding a liquid you actually like with the correct amount of nicotine. Don't rule out the fruity shit. The tobacco stuff I've tried has all beed terrible.
A lot of people use the big ass modded things that are about the size of a pack of 100s and take massive rips. They become as much as a hobby and discussion piece than an actual convenient smoking or dipping alternative.
Like I said, hit me up. I did a lot of research before I got mine.