market price, n.All

The Market price (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠identical for all goods of a kind however they were made, and that is how the social character of value is realized under commodity exchange.

The Market price (n.) zigzags ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠around production price, yet over long price lists it is surprising how narrow the swings are and how regularly they cancel out — the rule of averages Quetelet found in social life.