[St. Thomas] "Aquinas did not think that a just price is God-given. His thinking was actually driven more by market demand than divine determination. He specifically separated a just price from divine authority.Gente muito à frente!!!
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the Scholastic Luis Saravia de la Calle (c. 1544) wrote that “the just price arises from the abundance or scarcity of goods, merchants and money . . . and not from costs, labor and risk. . . . Prices are not commonly fixed based on costs. Why should a bale of linen brought overland from Brittany at great expense be worth more than one which is transported cheaply by sea?”
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San Bernardino of Siena (1380–1444) carried the idea of a market-based price to the extreme. He went so far as to say that the market price is fair even if it is below the producer’s costs. The
same idea was expressed a hundred years later by Francisco de Vitoria (c. 1480–1546) who argued that prices should be set “without regard to labor costs, expenses, or incurred risks. Inefficient producers or unfortunate speculators should simply bear the consequences of their incompetence, bad luck or wrong forecasting.”
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Trechos retirados de "The Price is Wrong" de Sarah Maxwell.