Here in the US, we’ve got a line of PlayStation games called “Greatest Hits.” The way this works is, once a game reaches a certain level of sales, they change the box art and drop the price. The box gets an ugly dark red band on it.
In Japan, Konami does their own budget release thing with their games called “Konami the Best.” Konami just announced the publication of their “The Best” edition of Dracula X Chronicles in Japan, for release this October.
The Greatest Hits version of DXC came out in the US a while ago, so this appears to be another situation where the west bought more copies of a Castlevania game than Japan did.
Source: Konami Japan