YBut, as they say, there is no end to waiting...I think prices of e-cigswill continue to decline (like calculators did and computers) for a while.
The PV industry is still in its infancy, and I predict that all the crap being used now will quickly be obsolete. Before long, I'm sure we will have tiny, cigarette-sized devices that do not use any cartridges or filling... Just fill 'em up with liquid like a mini gas tank. I've seen clunky, weird looking pumps and the like now, but eventually I think PV's will have some sort of internal "dripper" feeding from a liquid container.
RadicalJD