At a London auction, a 1997 first edition of Harry Potter & The Philosopher's Stone annotated by J.K. Rowling sold for £150,000 ($227,000, 176,000 euros), a new record for a printed book by the writer.
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The book contains commentary and 22 of Rowling's own original illustrations.
The lot formed part of a sale of books annotated by 50 British and Commonwealth contemporary writers, raising a combined total of £439,200.
The second-highest price was achieved for another children's classic, Roald Dahl's Matilda, which sold for £30,000.
Other lots auctioned included works by Julian Barnes, Alan Bennett, Seamus Heaney and Hilary Mantel.
Many authors represented at the sale turned up in person, including Helen Fielding, Frederick Forsyth and Ben Okri.
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"I am sure that the buyers of the individual books will be thrilled with their purchases," he added.
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