I wanted to state that the title provided felt a bit slanted against Kalypso, and was hoping you might adjust it to remove that feel from it, especially in light of the fact that I don't feel that it's news. As others who responded posted, the price disparity exists via Steam and many other sources regardless of the company, though for some it's greater than for others. I know that it's not unusual for some of my EU friends to ask for me to gift them something so that they can get the US price and then pay the appropriate taxes and duties manually rather than having to deal with Valve's calculations concerning the matter.
I believe a more accurate statement may be "Game price disparities in different regions." It doesn't target Kalypso, and the fact of the matter is that it's not just them so it doesn't make editorial sense to single them out.