Years back, I remember only hearing about eCigs, and thinking that it was something akin to an Bio-Ray bracelet (original scam that spawned the Q-Ray and iRenew) for the mouth--just another idiotic novelty that would blow-over in a year.
Later-on, I saw some Internet ads for 306-based units, that were just too small and "cute" for me to take them seriously. As time passed, I heard of the liquid containing nicotine, and reasoned that, if this was, indeed, the case, they could be an effective alternative to aCigs. The problem, at that time, was that the prices on the products were too ridiculous for their advertised yield, in terms of substituting for real smokes.
I forgot about them until we ran across a 306 offering that was reasonably-priced, and the guy was making realistic claims about how much the cartridge yield, in terms of smoking time, and also offered niquid to re-fill the cartridges with. While I was still dubious about the effectiveness of the dainty little thing, the price put it in the category of something that wouldn't "break the bank" to try-out for a week; and, if it didn't prove satisfactory, it would be something that is cheap enough that we could throw it away without feeling the slightest bit of angst over it.
At this point, I'm engineering my own mods.
It was many months later before I tried again with an KR808 kit on my own terms..and it's all history since that point.
