I'm surprised at the strong undercurrent of nationalist protectionism in this thread.
I'm sorry, but all sellers, including niche ones, need to realize that in the 21st century individuals live in a world, not a country. Exclusive rights to provide goods not controlled by environmental/safety/hazmat/firearms regulation is an artifact of a world that no longer exists. And we're all better for that improvement. Even those who think that their stake lies in preserving antiquated ways.
Now, if Vass wants to raise their price to whatever, that's fine. If they want to do a Vuitton and keep prices the same more or less everywhere all the time (Hermes runs sales all the time, if you know who to ask, and now they're even putting stuff on Bluefly...) then that's a reasonable business strategy. But if they want their price in Country X to be n and their price in Country Y to be n+export costs+lots more, fuck 'em. They have to expect that if they have something worth buying - I've not been here for long, but I've never read a disparaging comment about Vass shoes - then someone is always going to be willing to sell them in Country Y for n+export costs+less. That's just honest capitalism. And that some people, those willing to sacrifice on personal service (though the idea of buying a shoe built on a last you haven't yet tried is very foreign to me) or who are repeat ordering a known quantity, are going to jump at paying less.
A producer who tries to plug all of those kinds of leaks through means short of complete vertical integration is acting on delusion. Unlike what some here are trying to intimate, it's not personal. It's just business. And yes, there are going to be some free riders who will go to Bergdorf and try on a shoe, and then order it elsewhere for less. Free markets have free riders. That's just life in the modern world. If you don't like it, invent a time machine and get theeself back to the nastier pre-WTO, pre-Schengen world.
Of course, in shoes Vass isn't the only ones to do this. Alden's steep European prices were already mentioned, and likewise for a while Barney's (or was it BG?) carried Ludwig Reiters at vertigo-inducing pricing. Maybe they still do. But surely no American online merchant would turn down a sale of Aldens to a European address, and if you want LR's delivered to your door, pick up the phone and they're on your doorstep within a week.