By Sara Malm PUBLISHED: 14:39 EST, 21 July 2013 | UPDATED: 03:26 EST, 22 July 2013 The owner of a London bookshop has become the hero of hundreds of JK Rowling fans after he snapped up signed copies of her first detective novel. The Cuckoo’s Calling by Robert Galbraith is topping best-seller lists across the globe since it was revealed that Galbraith is a pseudonym for the Harry Potter author, and first editions sell for more than £1,000 each. Shopkeeper David Headley bought 250 signed copies of the book before the reveal – but instead of making a fortune, he has sold them all at face value: £16.99.
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Goldsboro Books bought 250 signed copies of The Cuckoo's Calling
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After revelation, owner still sold all signed books for £16.99 cover price
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Some copies, signed by Rowling's pseudonym, re-sold for over £1,750
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The Cuckoo's Calling are topping bestseller lists across the globe
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Since it was revealed Galbraith is JK Rowling, first editions sell for £1,000
However, several online literary sleuth’s began questioning similarities between @placeholder and Galbraith as well as noting how well the ‘male’ author had described women’s clothes.