1. General
The term price denotes the amount of color::Geldmoney to be paid per unit of goods for a purchase (in contrast to barter). Until the 19th century, for some goods (especially baked goods) as a rule it meant the opposite: the quantity a purchaser would receive per monetary unity (so that the weight of a penny loaf of bread changed over time). With the advance of a money economy and market relationships in the Middle Ages, prices became a central…