buono compares new and used prices for 2 books by Tien Do across European bookshops. The cheapest new one is Les huiles essentielles : vertus et applications at €8.79; the cheapest second-hand copy is Les huiles essentielles : vertus et applications at €4.22.
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.