So I am on the search to buy a 510, but I am confused where to buy it from. It looks like Dragonfly ecig, Totally wicked, and Health cabin carry the Joye 510. My question is, are they all the same, or are they different. All of the ecigs have different packages, but part for part the TW is most expensive and HC is least. Anyone know if these are all the same, or all completely different?