Are you involved in wholesale or retail trade? Are you a professional buyer or aspiring to become one, and would like a guide? Are you a store owner and would like to learn the secrets of professional buyers in order to increase your profitability? Are you a seller and would like to know how professional buyers think, organize, and evaluate sellers? Are you a regular consumer and would like to learn how product prices are determined and profitability is created? Then this book is for you. The author, with fourteen years of professional experience, captures the secret world of markets, the mindset, evaluation, operation, and organization of professional buyers. A valuable practical guide, unique in the Greek language.