The initial dive into
vaping can be pricey - about as much as you'd spend on cigs/week.
It tapers off after a month or three once you have multiple batteries, a whole bunch of cartos, and quite a collection of juice.
At that point you realize you have over 6 months worth of
vaping material.
When you hit that stage, you'll find yourself buying some nic, some VG & PG, some flavorings and take a stab at DIY.
Then you buy a slew of blank cartos for your DIY (which is actually pretty good) & any purchased juice.
While you're putting in your blank carto order, you might as well pick up a few packs of pre-filled cartos, a couple extra batteries and a pass-through, you know, just because.
...Oh, and there's nothing wrong with getting your 4th USB charger while you're at it, now is there.
When you eventually come to the conculsion that you have enough vaping gear to last well over 2 years, you will (a) still buy more stuff cause you want to and (b) you realize you've only spent 1/3 of what you used to spend on cigs.
Or is that only me...