Revelations: Book One of Merlin Chronicles (Volume 1) (by Daniel Diehl): Jason is surprised to find Merlin, items mythical wizard, actually existing.
Basbanes devotes a whole chapter to "Three Little Words"- rarity, scarcity and value - in his book, On the list of Gently Sad. http://gyeongshin.com/ksen/bbs/board.php?bo_table=free&wr_id=1234478