Reply to Comment
They buy the rights
This is Jamingus, Scott's butler. Scott is in the Andes working on the INFECTED audiobook. I will answer for him:
They pay a fixed amount to publish it. It's an advance, same as a deal with an American publisher. You get X% of each book sold. That % first goes to pay back the advance. So let's say the Russian deal is a $1,000 advance, a 10% royalty and a sale price of $20 (for hardcover). That means I get $2 per book sold, but the first $1,000 (the first 500 copies) goes back to the publisher to cover that advance.