I've been vaping for seven months now and am pretty much over finding the combinations of hardware and e-liquids that really hit the sweet spot for me. Except for the occasional odd, "try it out" purchase, I can now calculate what I spend per week on consumables.
I mostly use eGo/Riva type batteries with 510 echo-e cartomizers and Top Vapes and Dekang e-liquids. I assume I'll eventually lose a battery after a conservative 150 recharges. A single recharge lasts about half a day (I chain-vape). I figure echo-e cartos will die after 10 cleanings, but I've only had to pitch one, even after more than 10 cleanings. An echo-e carto needs to be cleaned weekly, and I use four or five different ones during any week. I seem to vape about 3 ml. per day, and I buy bigger bottles of e-liquid to keep down the per-ml. cost.
So, on a weekly basis (7 days), my normal consumption is:
amortization of $20 batteries: $ 1.86
amortization of failed cartos: $ 1.80
e-liquid (21 ml. per week): $ 8.40
TOTAL: $ 12.06 per week
I could get that down somewhat by DIYing my e-liquids, which I'll start doing within the next few months.
I used to be a two cartons per week smoker, at $54.00 per carton, for a total of $108.00 per week.
Huge difference, as far as the consumables are concerned. But there's always that new flavor or new mod or new carto design . . .