LONDON (CNN) -- An 800-word prequel to the blockbuster Harry Potter novel series fetched nearly $50,000 Tuesday for a writer's group and dyslexia charity.
Author J.K. Rowling autographs a book for a student graduating from Harvard University June 5, 2008.
The bit of story by author J.K. Rowling sold for £25,000 -- just under $50,000 or $62.50 per word -- to an absentee bidder. The auction had started at 10,000 pounds and was driven up by two bidders -- one who was present and the eventual winner, who funneled his bids into the auctioneer's earpiece.
The prequel is hand-written and signed by the author, according to Waterstone's, a large bookstore in central London that hosted the event. It finishes with the words, "From the prequel I am not working on -- but that was fun!"
The storycard, which measures 5.75 by 8.25 inches, is signed "J.K. Rowling 2008."
Waterstone's plans to display facsimiles of the cards at all its stores in Britain and online shortly after the auction, and a printed book featuring cards from all authors participating in the auction will go on sale in August, the store said.
The proceeds will go to Dyslexia Action and English PEN, a writers' association. Other authors include Margaret Atwood, Sebastian Faulks, Nick Hornby, and Tom Stoppard.