Russian customers purchase from the .com store. You receive 35% royalties and the customers are charged VAT by their government. Book sales in Russia are controlled by three retailers with strong ties to the government and the underworld. You shouldn't expect Amazon to crash that party anytime soon.
By the magic of the internet, Amazon is selling our work worldwide. I have now confirmed that I have readers on every single continent save Antarctica, virtually all of whom seem to use the US site and most of whom look to be in KU. If tomorrow some guy or gal at an Antarctic research station decides to visit Amazon and buy one of my books, I'll have a reader in Antarctica, too. Obviously, I am by no means unique.
As long as one's card issuer is somehow connected to SWIFT via some banking chain, and one has an internet connection, one can buy a book on Amazon. Even when it comes to those pesky bots messing with prices and denying foreign readers the low pricing of a kindle countdown, all it takes is a visit to the likes of anonymouse or hide.me, and the bots are fooled into treating the reader as if he came from the US. For those more technically minded, there are even better ways.
Welcome to the new borderless world. They haven't yet festooned the net with enough objective control servers to enforce borders online. And as fast as the jackbooted bureaucratic goons keep adding new control measures, smart freedom-loving folks keep adding new ways to bypass them. Eventually, the goons will catch up. But that day ain't here yet.