User blog:Devilmanozzy/Books, LLC selling books of wikia wikis content?!

I found today that much of Ghostbusters Wiki's content in book form on Amazon, and so are many other wikis: Amazon: "Source: Wikia"

The question first on my mind is, "Is this legal?". Second, if it is, can Wikia cut me a deal on books based on Ghostbusters Wiki?! lol

There are 15 books for Ghostbusters Wiki by the way... (Link)

I think some of the wikis out there, may have legal issues to address before doing this.

Update I was told this will be addressed by Wikia in the near Future. My advice is to wait and see. We all have a lot in stake here. Wikia may not have had anything to do with it, Read this (link posted by Randomtime). Wikia could say they didn't which then the debate is then, are they going to take legal action. There is more to this I'm sure.

Update 2 Jenburton answered the concern in comments.