When I first read this thread i was really angry.
CoC is the unholy grail of apostate books in the eyes of a JW who is still in. There was no way my conscience would let me go out and actually buy the book, providing money to the author, which would support his cause.
Because i found it gratis, on a PDF, I was able to read it and it helped me organize my thoughts and give words to my uneasy feelings toward the organization. If it hadn't been for the free pdf I would've never read the book.
Because I read the PDF I was then motivated to buy the book in another language to help my wife.
There is no reason that there shouldn't be a free, official PDF version on the web for lurking JWs who don't have the courage to buy the book.
In the end it's always about the money and I'm sure you wouldn't be concerning yourself with this issue if you didn't stand to make a chunk of it. That being said, piracy is illegal so do what you have to do.