It's a scam. This "publishing" company "publishes" a large number of books which are simply hard-copy print-outs of Wikipedia content, for exorbitant prices. I'd really like to meet the folks who have actually purchased any of these. How these douchebags stay in business I can't figure.
There is more in the Wikipedia article on VDM Publishing. Apparently, they hope their books are bought accidentally by clueless or hasty libraries.
In a way, it is pretty amazing, though. If you told someone in 1990 that in The Future, there would be an immense, free repository of knowledge available to almost everyone, and machines would be automatically assembling and publishing randomly created books from this content, they would probably respond with something like "Wasn't that on Star Trek?"