There's no problems at all buying e-cigs and gear on ebay, cuz as others have pointed out, they're sold as personal vaporizers. Also a lot of e-juice on there, but w/ no nicotine, which they'll usually mention even for the e-cig stuff. It's the same way they sell bongs/bowls/grinders under the category of tobacciana. The e-cig sellers I've dealt w/ on there so far have been more than willing to make sure everything is right too. There's very little risk of you getting ripped off, as these sellers want the good feedback.