Metro LL Region Lock (?)

I'm from Europe and was wondering if i could get this game from a Russian trader.
I've looked through SteamDB and it mentions RU, BR & NA tags there so it should be locked
but when i go to http://store.steampowered.com/?cc=us & http://store.steampowered.com/?cc=ru i can add them both to my cart just fine.
*apparantly this doesn't matter, i can add Far Cry 3 as well but i know for sure that one is locked.