A lot of people made noise about not buying this due to the DRM, but I don't know how that translated into sales. Settlers games have never been big sellers to begin with. I hope Ubisoft realizes poor sales are due to the DRM and not people disliking the Settlers brand. Everyone should buy Settlers VI instead then if they haven't already.
Other than that, I don't know where companies would post their sales data.
^This comment got me to go and check, cause if they had removed the DRM I'd go buy the game. Turns out they modified it so that you don't have to be continuously connected to play, but you do have to be connected to *start* a game, which is still incredibly stupid. This is according to wikipedia anyway.
"I don't know what a Hollaback girl is--I just know I want her dead." --Brian Griffin