buono compares new and used prices for 8 books by Karen Perry across European bookshops. The cheapest new one is Can You Keep A Secret? at €3.21; the cheapest second-hand copy is Les mensonges at €3.14.
Cheap books UK · Libri usati economici (Italia) · Livres pas chers (France) · Gebrauchte Bücher günstig (Deutschland) · Cheap books Europe
Some links here are affiliate links: if you buy, buono may earn a commission. It never changes the price you pay.