Those are great shoes, Jem! And I am following this cross border shopping discussion with interest. Dianthus does that PO box version, I believe. Dianthus, where are you? She finds it works for her. It could work for me, too...I am about an hour from Watertown, New York. But unfortunately, nobody in her right mind would visit Watertown for any other reason and it might start looking a little suspicious if I made monthly trips back and forth!
Gravity Pope has their main store in Vancouver, I believe. They are great!
And Fly London shoes are fab, fab, fab! My only problem with them is that some of their styles are a bit heavy; I prefer lightweight footwear.