Wow, those are actually priced competitively as compared to tobacco? I might have mentioned that I bought therapeutic nicotine inhalers for my dad, which are waaay more expensive than their equivalent in cigarettes, but the only electronic cigarettes I've seen start at €100, with god knows how much for the cartridges.
Is tobacco comparatively expensive where you live, that this is an affordable alternative? Are there any similar things to find in Europe? My mom tells me that e-cigs are banned here for some reason, although I gotta check. Something about health risks. Health risks, they say! For an alternative to smoking that doesn't involve inhaling tar and carbon monoxide! The hypocrisy.
...Okay, seems that they're not allowed to advertise them here, but otherwise they're legal. The one company that I can find selling them is also selling... phones, laptops, budget desktops, laptop components and smoking accessories. Interesting.