Normally for a post like this, since it is under advertisement and one of the requirements of coinpeople is actually to be on this forum for 30 days as well as having 25 posts, it should be deleted.
But then, I don't want to sound like a moron.

I do believe that you can get Soviet silver rubles at
http://www.chervonets.com although I don't know if the prices are right for you. I gave up a long time ago trying to find them in their original boxes and certicates due to the mad pricing.