I know many authors say that a pint of blood has gone into a book, but few take this metaphor literally. I bring you Sachin Tendulkar who has mixed in a pint of blood:
The coffee table book dedicated to Indian cricket star Sachin Tendulkar contains something special, a pint of his blood was mixed with paper pulp to create the signature page for the book dedicated to his career. The special page appears in 10 limited-edition copies, which cost $75,000 each and according to the WSJ, have already sold out. (via The Luxist).
Blood is the ingredient we need to prop up prices, eh? Can you include blood with an e-book? If we could mix in a pint with the pixels, I bet Amazon would drop this $9.99 price point for good.