Total Number and Value of Artworks in Price ranges

This Diagram presents the relation of number and value of artist's sold artworks and could be used for understanding the domain of an artist's stable prices to some extent.  For instance, if an artist sells less than 20% of his/her artworks in the "X" price range and the other 80% in "Y" price range, it indicates that his/her market is closer to the "Y" value.