Hi, thanks for your reply. Well, I actually checked them out earlier and you read it in Russian, they specifically say that they're not in stock. Their other distributor is in Dubai, but they're not allowed to send anything to Russia because it goes against their agreement with Bitmain as a distributor.
There is a section called "Computer Hardware" in this forum under the Marketplace global section. There are some trusted users there who are dealing with mining equipment but I am not sure if they have S9 in stock or not. Since bitmain is having problems with their business these sellers might also not be having any in stock. Tough luck indeed.
But it wont hurt to ask in their threads and check if they have in stock anymore. Just make sure to check their feedback pages for trusted feedback and use an escrow in case you want to go forward with the deal.
The safest way would be to buy from an official reseller, with that option gone, your friend might want to reason with buying an S9 of wait for something better.