I started saving very quickly. I was pumping-out about $23.00 a day on two types of cigars, five of which I found myself inhaling from like you would a cigarette, and two of which I inhaled from a bit less. (This after quitting cigs twice.)
My investment in vaping, for everything up until today, is right about $300.00. I've been vaping for (at this time) 23 days; which means that, 10 days ago I broke even.
I will probably spend about 6% to 8% of what I previously spent on tobacco, on vaping devices or liquids over the first year.