places like rtdvapors and many others have the 2 cent or i thing the one there is the vape safe or something like that best you can do is maybe find a dollar difference on them if your lucky. it is reusable i believe so its a one time thing. you can go that way or get protected batteries instead.
with a mech make sure you get a multi meter unless you have a mod that can read resistance. and wick/wire and your set.
beyond that have fun, spend some time in the rba forums for tips and tricks, and let us know how it goes.