Yeah, Im not seeing a link for the collection, either. Like you, Im seeing episodes you can stream. If I could supply a definite link for the series, I would. Maybe theres an episode you could watch for free on YouTube that would give you an idea of what the rest is like?
Its an enjoyable series and worth your time to watch, if you can. But I dont want to oversell it, either. The Brett series is head and shoulders over Livanov and friends. For now, just keep an eye out for it and if I find a link, Ill share it. But Amazon was the place I found it a few years back. Im sure it will be available again one day as a set, if it isnt out there somewhere already.
If you havent seen the series with Wilmer and Stock, I recommend tracking that down in the meantime. Its in black and white and shot on video (and the music a bit light) but the acting is first-rate and the price is definitely right. I found my copy at a Frys Electronics, of all places. The DVD was produced by A&E.
Go to Amazon. In the search field, copy/paste the following:
Sherlock Holmes & Dr. Watson. Complete Collection. Russian.
That should return hits for the entire Russian series. Good luck! :-)