buono compares new and used prices for 27 books by Mark Sperring across European bookshops. The cheapest new one is 20 Pumpkins at Bedtime at £3.50; the cheapest second-hand copy is Qu'est-ce qui est vert, petit, avec des dents ? at €1.99.
Cheap books UK · Libri usati economici (Italia) · Livres pas chers (France) · Gebrauchte Bücher günstig (Deutschland) · Cheap books Europe
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