Originally Posted by The Atheist
Andorra and San Marino are heavily reliant on tourism, with Andorra being a freeport, too. So they get busloads of tourists dropping in to buy cheap stuff. Perhaps a bus tour going like Venize - San Marino - Rome.
As for those four high-altitude countries I notice that Bhutan and Nepal are hindu/buddhism countries, while the two -stans are overwhelmingly muslim. But then we're back to looking at cultural differences again? Not sure what it could mean.