Ive never been in to the RBA route.
Kayfuns, Taifuns, Not fun for me.
I suggest you go somewhere like Fasttech... Buy a Mech mod that ships next day... try it copper... Like a pagasus clone. And a Vulcan RDA clone. Or Zenith. Or one of the other ones. And buy an intellicharger. and an ohm meter (one with built in battery i think is best. ) . Check out for less than a hundred.
And get batteries on a site that is reputable, not Fasttech. You can get wires too. 28gauge Kanthal. Or 24, 26, All good to start. 28 is my go to for starting though i think.
And that should set you at around 120 bucks .... worst case. And Now, While your waiting for all that stuff... at least 3 weeks with fasttech, Which is not fast at all.... Go read up on safety. Read a couple posts a day. And then you should be good. and then your in the hobby.
I AM SUGGESTING YOU GO THIS ROUTE. It is a hell of a lot of fun. But again, Dont go in Blindly.
Ive been vaping since June. Started on a Halo. Moved to an MVP and then got tired of buying coils and tanks and burnt hits. Bought a mech and an igo RDA... got in to that,.... and then... It was all great from there. My Mvp... is somewhere in this house. Probably still with a tank on it half full of juice... hahah.