here's a kit that comes with 2 e-twist batteries and 2 CE4 Clearomizers, and 1 charger for under $50.
i started out buying more then i should, ending up mostly just using the e twist. they have adjustable voltage so you have more options on what tank you want to use.
been using the smok rbc bottom coil system and get a great vape out of them,cost about $6-$8 and you can replace the bottom coil
and then you just got to fine a e-juice and the nicotine level you like. just make sure it's not made in china,ect.
the cash you'll save is big, i was a 1 pack+ a day smoker and only spending a fraction of what i use to!
so far my favorite juice is from a shop that just opened up down the street from me called- "Brandy Cigar" yummy!