buono compares new and used prices for 20 books by Stefan Klein across European bookshops. The cheapest new one is Un caprice du néant : mystères de l'Univers at €6.49; the cheapest second-hand copy is Apprendre à être heureux : neurobiologie du bonheur at €4.50.
Cheap books UK · Libri usati economici (Italia) · Livres pas chers (France) · Gebrauchte Bücher günstig (Deutschland) · Cheap books Europe
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