I don't know how well you are informed of life in Russia, but it's probably not as bad as you thought, Russia tends to get mainly negative press coverage in the west. There is absolutely no problem trying to buy things in the shops, of course some western products are quite expensive since they need to be imported.
While admittedly some aspects of life are less comfortable than back home, most problems are minor nuisances. For instance it is not easy to get money from ATMs here in town, so I keep running ending up being in a situation in which I have to borrow some money from friends because I forgot to take this into account and ran out of money. And of course not being able to speak Russian does not make things easier, but then again we shouldn't forget than one can't expect everyone in the entire world to speak English, can we? Fortunately being here on an AIESEC traineeship means that there will always be people to help you in case you really need them.