# power-of-purchasing

## Definition

The capacity to acquire goods and services through exchange, determined by the quantity of labour one's possessions can command. Smith argues that the exchangeable value of any commodity is precisely equal to the extent of the power it conveys to its owner to purchase labour or the produce of labour in the market. This concept links economic value directly to the ability to mobilize productive resources through exchange.

## Source Chapter

Book 1, Chapter 5: "OF THE REAL AND NOMINAL PRICE OF COMMODITIES, OR OF THEIR PRICE IN LABOUR, AND THEIR PRICE IN MONEY."

## Context

Smith develops this concept while explaining why labour is the real measure of exchangeable value. He argues that the power which possession of a fortune immediately conveys is the power of purchasing a certain command over all the labour or produce of labour in the market. This idea is central to his definition of wealth and connects to his broader analysis of how market economies distribute productive power.

## Economic Domain

Distribution

## Smith's Original Wording

"The exchangeable value of every thing must always be precisely equal to the extent of this power which it conveys to its owner."

## Modern Interpretation

Power of purchasing represents the fundamental economic capability to obtain goods and services through market exchange. In modern terms, this concept relates to purchasing power and the ability to direct economic resources. It highlights that economic value is fundamentally about the capacity to mobilize resources through exchange rather than simply owning assets, a principle that remains relevant in discussions of economic inequality and market power.