There is a guy up there that sells some really, really cool frags. I would skip all the stores and try to set up a time to meet him. Don't know his name but I will see if I can find it in the sale thread.
Definetly sounds like a potential customs problem to me. I would call ahead and see what they say. My gut would say no, you are not allowed tot ransfer thema ccross borders without a permit of soem kind.