GrreatTeacher inquired, "Does this mean that WT gets a portion of that 99 cents?"
It is not without good reason that many honest-hearted lovers of Peace and Goodness ask such a question. If the WTB&TS is the "author" of this Kindle edition of The Finished Mystery, then the answer to your question is "Yes!" But is it really likely that the WTB&TS would do this? No, because The Finished Mystery lays bare the lies, trickery, deception, speculation, and fanatical expectation of early 20th century end-of-time religionists.
The book was first published in 1919. Under US Copyright law that was in effect at that time, the book is now IN THE PUBLIC DOMAIN. In other words, the book is no longer the property of The Watchtower Bible & Tract Society, and they cannot prevent other people - YOU for example - from re-publishing the book, thus enlightening a new generation of truth-seekers to the misology that is The Watchtower. By setting the price at 99 cents, the person behind this project demonstrates their whole-hearted desire to be of service to the community of Man.
The worst enemies of the Watchtower are the CRAP they have put into print and the inexorable passage of relentless, mute, uncaring TIME. History demonstates that 100% of the predictions, speculations and anticipations of The Watchtower have FAILED to come to pass. A reading of Watchtower CRAP shows what superstitious bigots and liars the writers of The Watchtower were. That tradition continues unabated to this day.
If, deep within your bones, GrreatTeacher (I'm assuming SPELLING is not what you teach) there is a speck of envy over the thousands, millions, and yes, BILLIONS of dollars to be made by writing about The Watchtower or re-publishing the public-domain CRAP from The Watchtower, you can either ask those here who have experienced un-dreamed-of prosperity and financial boon about their experience or you can give it a go yourself, striking out for the fields of diamonds that lie so close to home.
May Mighty All-Father Odin grant you worthy foes!
