I think that some of the vendors I've listed ship to the US, although what import restrictions are like on items coming in from England I don't know. I imagine that as with any import/export it can be just the luck of the draw.
If anyone is interested in trying Manabush liquids please let me know. They are relatively local to me. They specialise in liquids that have a tobacco type base flavour with a variety of different accompanyments - for example biscuit, banana or chocolate. They are well known over here for being liked by people who do not normally like tobacco flavoured liquids. There is a chap called Martyn Parker who has done a series of
reviews that can be seen on YouTube, and are entertaining !