First question - do you speak Russian?
If yes, the page you provided (yes, it IS official MS site, Russian localisation) contains Дополнительная информация (additional info) at the right side, some PDFs there explain all.
But it seems that you don’t, and you got there thru Google and are stuck not understanding a single word, then here is a “overview” for you (I’m “born in the USSR” [:)], so I speak Russian as native speaker)
The site is about all Dynamics series products for Russia (this http://www.microsoft.com/Rus/dynamics/about/overview.mspx is “home”, looks as all MS Dynamics sites, only written in “unreadable” cyrillic alphabet)
Many countries offer some kind of localised EXPRESS Navision package - usually at lower price than standart, but max user count is limited, for small businesses. This NAV EXPRESS RU is just such a product.
But, as in Russia there are very strict legal requirements for ERP systems, plus very strong localising team at Microsoft Russia, localised Navision RU contains out of the box almost everything, which we in other countries must buy as AddOn’s - HR management, Payroll with all imaginable methods of calculating salaries/wages, specific Sales & Purchases handling, Inventory with Customs control if you do international business - in one word, everything government and their IRS (always working side by side with Economical police) may require.
This all changes frequently, the same team updates NAV quickly to conform with new legislation. It should be easy to work as an implementer there, as there is no much room for mods left [:)] Actually I’ve played a little bit with RU version -well, not with this express one- it really contains almost everything.
To resume - what you found, was an special offer from midsummer to Dec 20th last year, 35% discount and benefits in implementation - that’s why all those red labels and exclamation marks, it wasn’t because of product itself being somehow unique and especially different from NAV 5.00 SP1 RU.