buying singles/boosterbox in St Petersburg?

[Crazy Eddie]

Hi everybody, late august I'm going tospend a couple of days in St. Petersburg. Ofcourse I'm going to get the obligatory wodka and a matrushka for souvenirs, but I was also thinking about buying some russian MtG. I have already found the shops that according to Wizards of the Coast sell Magic, but I was wondering if someone more familiar with the city can recommend me a store where I can pick up some russian singles and a russian M12 booster box. I've tried to find more information using Google, but from that I only learned there is also a St. Petersburg in Florida...

Thanks in advance.