I'm sure this is not news, but FYI, you can send a sufficient sample for a bowl or two of a blend in a first class letter. Just put it in a plastic snack bag, probably with a clear label to advise the postal inspector what it is, and send it along with first class postage. Make sure it lies good and flat. It shouldn't show a lump. This is a good way to let the recipient know if he wants to try a whole tin or bulk shipment of a blend and doesn't require a trip to the post office or postal machine. This only works with loose tobacco. This simplifies sampling and makes life easier -- more time for the pipes.