My answer would vary WILDLY depending on which time frame I used for my calculations.
Taking an average from 2010 would make the highest group in the poll look downright thrifty.
A 545 day average (my entire vaping career) it's still off the scale. But, it's coming down.

If I use figures from
only the first six months of 2011, I do better ... in the $1,000-$2,000 per year group.
My average is decreasing fairly steadily. So far in 2011 I've got several periods of a month or more with nothing spent.
But, the Eclipse will create a
temporary uptick in the graph.
Saving money isn't a factor (the hope of extending my life IS). But, my initial insane spending is long over ... a good thing since I'm not made out of money, LOL. But even with the crazy spending frenzy in the calculations, I
still come out spending 10% less than cigarettes at retail pricing would've cost me in the past 18 months.
And ... my lung function has improved dramatically ...
priceless. That's what it's all about, for me.