I think everybody here is missing something...
If this really was some pirate group playing havok with Amazon's System the books would be
a) perfectly proofed and formatted
b) free or at least almost free
What we have here is probably a prankster or somebody who thinks he's very clever and can make money ripping off Amazon and it's customers...you can say what you want about pirates, but they do have their standards and principles...and scamming people for money just does not fit the bill IMHO...