I read that it's not a new scam, and that they probably have around
40,000 'books' of that kind and can do it more-or-less legally (although
I'm not totally convinced that the share-alike is totally complied with,
that is they should probably release the sources to the books, which as
far as I can tell are compilations of wikipedia articles)
And this is an additional reason for which I will be avoiding Amazon as
much as possible.