Original sentence: The labor theory of value, which is no longer believed to be true, that holds that relative prices in a market are proportional to the amount of labor required for the production of those goods
Edited sentence: As marginal utility theory cannot explain how changes in demand impact on prices, neither can it explain prices.But as demand depends on the level of income of an individual, prices determined by fluctuations in demand will reflect changes in the distribution of wealth.But as the "least valuable use" of an object is when it is useless, i.If he had a million gallons of water, he would not even notice if he lost a gallon and hence the price of the millionth marginal gallon would be zero.The labor theory of value, which is no longer believed to be true by proponents of marginal utility theory, holds that relative prices in a market are proportional to the amount of labor required for the production of those goods.This can be repeated for all commodities and therefore, all prices should be zero if marginal utility theory is correct.when it has no use, the marginal price for every commodity should be zero