Barter, truck, and exchange is a principle of economic behavior dependent for its effectiveness upon the market pattern. A market is a meeting place for the purpose of barter or buying and selling. Unless such a pattern is present, at least in patches, the propensity to barter will find but insufficient scope: it cannot produce prices.

People generally know only the barter system. “You give me this; I will give you that!” This is not sharing. Most relationships are not about sharing; they are only about bartering – your money, your body, your emotions. Now, sharing is, “You don’t have to give me anything because I don’t need anything from you, but anyway, I will share this with you.” Setting up a whole life of barter may be convenient, but it is the way of the weak. This weakness is the first thing that has to go if you want to meet Shiva.

Only in a symmetrically organized environment will reciprocative attitudes result in economic institutions of any importance; only where centers have been established beforehand can the cooperative attitude of individuals produce a redistributive economy; and only in the presence of markets instituted to that purpose will the bartering attitude of individuals result in prices that integrate the economic activities of the community.

The Rational Optimist: How Prosperity Evolves, Matt Ridley elaborates: "'If I sew you a hide tunic today, you can sew me one tomorrow' brings limited rewards and diminishing returns. '[But] … I make the clothes, you catch the food' brings increasing returns. Indeed, it has the beautiful property that it does not even need to be fair. For barter to work, two individuals do not need to offer things of equal value. Trade is often unequal but it still benefits both sides.

With the breakdown of money economy the practice of international barter is becoming prevalent.

[R]eciprocity is barter. I always understood that barter was the last effort of civilization that it was exactly that state of human exchange that separated civilization from savagery; and if reciprocity is only barter, I fear that would hardly help us out of our difficulty... [W]hen he taunts me with his quotation of some musty phrases of mine 40 years ago, I must remind him that we had elements then on which treaties of reciprocity could be negotiated. At that time, although the great changes of Sir Robert Peel had taken place, there were 168 articles in the tariff which were materials by which you could have negotiated, if that was a wise and desirable policy, commercial treaties of reciprocity. What is the number you now have in the tariff? Twenty-two. Those who talk of negotiating treaties of reciprocity...have they the materials for negotiating treaties of reciprocity? You have lost the opportunity. I do not want to enter into the argument at the present moment; but England cannot pursue that policy.

The forms of social organization produced the market, not the reverse... Instead of markets calling forth efficient forms of social organization, political and social interactions produced the structuring of sociologically effective markets.

Markets are institutions that exist to facilitate exchange, that is, they exist in order to reduce the cost of carrying out exchange transactions. In an economic theory which assumes that transaction costs are nonexistent. markets have no function to perform, and it seems perfectly reasonable to develop the theory of exchange by an elaborate analysis of individuals exchanging nuts for apples on the edge of the forest or some similar fanciful example. This analysis certainly shows why there is a gain from trade, but it fails to deal with the factors which determine how much trade there is or what goods are traded.

5)​Brokerage Systems Brokers bring buyers and sellers together and facilitate transactions. They are market-makers for a particular industry and earn money typically on each transaction.

Broadly, the proposition holds that all economic systems known to us up to the end of feudalism in Western Europe were organized either on the principle of reciprocity or redistribution, or householding, or some combination of the three. These principles were institutionalized with the help of a social organization which, inter alia, made use of the patterns of symmetry, centricity, and autarchy. In this framework, the orderly production and distribution of goods was secured through a great variety of individual motives disciplined by general principles of behavior. Among these motives gain was not prominent. Custom and law, magic and religion cooperated in inducing the individual to comply with rules of behavior which, eventually, ensured his functioning in the economic system.

We shall here define the market as a set of social institutions in which a large number of commodity exchanges of a specific type regularly take place, and to some extent are facilitated and structured by those institutions. Exchange as defined above, involves contractual agreement and the exchange of property rights, and the market consists in part of mechanisms to structure, organize and legitimate these activities. Markets, in short, are organized and institutionalized exchange. Stress is placed on those market institutions, which help to both regulate and establish a consensus over prices and, more generally, to communicate information regarding products, prices, quantities, potential buyers and potential sellers.

Balanced reciprocity is as much a social compact as it is an economic advantage. It is particularly important in hunting-gathering societies, where no individual could possibly accumulate a surplus, live independently of other members of the band, or become so successful in the quest for food as never to need meat from someone else's kill.

There is a powerful case for the market mechanism, but it is not that markets are perfect; it is that in a world dominated by imperfect understanding, markets provide an efficient feedback mechanism for evaluating the results of one's decisions and correcting mistakes.

It is because prices are stable, and are perceived by agents to be in equilibrium, that the task facing market institutions is less daunting in this respect. However, market institutions may still have many other functions, such as providing information regarding quality and the location of potential buyers and sellers, and regulating both the product and the entrants to the market. In fact, a crucial function may be more subtle; by ordering trade under the aegis of some institution, the price and quality of the product may be legitimized at its given level. There is a kind of stamp of institutional approval which may contribute in a powerful manner to the emergence of price norms…..