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.