I got lucky in my first purchase when I settled on the VIP from vaporizela.com. It was 50 bucks, but only came with one battery and a 5 pack of cartos. I say lucky, because it seems to be exactly like an Ego. So I just ordered an atomizer, some blank cartos, a slim battery (for going out) and a USB passthrough battery for when I'm sitting outside all day. So far, I've been vaping for 3 days and spent 50 bucks on my original kit, 10 bucks on some Kretek juice from TastyVapor and I just laid down 52 last night at Vapor4Life for all of the above parts.
That should last me quite awhile and basically just over 100 bucks. That is NOTHING compared to blowing around 7 bucks a pack for Djarum Black clove "cigars" and only getting 12 in a pack

I was probably averaging 120 to 140 a month in smokes. Not only will this be much cheaper, but it's healthier, cleaner and more pleasurable for me thus far. Winning!
I'll probably get 15 or 20 more cartos and load them up with a good variety of samples or mini juices to see what else is out there, but this s by far one of my cheapest "hobbies"
