I personally think something like the Kanger Evod starter kit is the best place to start.
Yes the sub box mini kit is state of the art bjt its not practicle unless you know vaping will work for you or not.
Yes..$50 for a tank and device..but consider another 20 for 2 or 3 batteries to keep him going all day..also consider another 15 for a charger..also consider 15 dollars a month for coils and hope all 5 you buy are even good..So its not a cheap way to find out.
With the evod kit you get everything you need except juice..coils are $5 dollars for a 5 pack...you dont need to buy a charger but a spare battery is recommended.
The evod kit is what got me off the cigs and despite my advancement into vaping if i lost everything but my evod kit i could still stay of the cigs easily.
What nicotine content you need is going to be a trial and error...finding a juice you like with said nicotine content is another adventure..In any case its not going to cost you near $100.00 to see if this works for you or not...If it does ,then move up to bigger and better things as most all do.
EDIT:
Here you go ..$23.00 plus shipping...pick your color and be done...come with 2 batteries and 2 tanks and 5 coils plus each tank has a coil in it already.. and 2 chargers...one for usb and one for wall outlets...i paid $54 dollars for this same kit almost 3yrs ago and it still works if that means anything...if you have an option get the kit with the 1.8 ohm coils i recommend it, or when you need more coils choose the 1.8 ohm....
http://www.vapesupersaver.com/evod-starter-kit/