[Мимопроходил]

As for the avant-garde will not say, but, for example, "Detailed Dictionary of Russian engraved portrait," Rovinsky in 4 volumes, in my opinion, completely loyal to estimate. Recently I was searching for such a package and Save more serious numbers were called.
And then, prices are rising, in my view, such as virtual. The figures appear all the above, as with any of the booksellers did not talk - real sales at normal prices not enough to swear by. In their view, the books in sales sagged more serious paintings. Good luck!