I'd bet I've spent upwards of $700, in the 1-2 months I've been vaping. A lot of that went for hardware and juices that I will probably not be using. The experimental nature of it, along with it being a "hobby", lends itself to that sort of spending. I have, however, been able to redistribute some of the stuff I will not be using, to 3 or so smokers who now believe. And I now have enough juice/hardware to get me through 3-4 months.
3-4 months of a 1.5 pack habit = ~$1,000
Net financial gain of not smoking, for the 1st 3-4 months = ~$300
Health benefits of not smoking for 3-4 month = priceless
Oh, and introducing at least 3 new people to a way to kick their decades-old habit=even more priceless
So, yeah... $700 well-spent. And I figure it'll only cost me a fraction of that, from here on out.