Price discrimination or price differentiation exists when sales of identical goods or services are transacted at different prices from the same provider. In a theoretical market with perfect information, perfect substitutes, and no transaction costs or prohibition on secondary exchange (or re-selling) to prevent arbitrage, price discrimination can only be a feature of monopolistic and oligopolistic markets, where market power can be exercised. Otherwise, the moment the seller tries to sell the same good at different prices, the buyer at the lower price can arbitrage by selling to the consumer buying at the higher price but with a tiny discount. However, product heterogeneity, market frictions or high fixed costs (which make marginal-cost pricing unsustainable in the long run) can allow for some degree of differential pricing to different consumers, even in fully competitive retail or industrial markets. Price discrimination also occurs when the same price is charged to customers which have different supply costs.
The effects of price discrimination on social efficiency are unclear; typically such behaviour leads to lower prices for some consumers and higher prices for others. Output can be expanded when price discrimination is very efficient, but output can also decline when discrimination is more effective at extracting surplus from high-valued users than expanding sales to low valued users. Even if output remains constant, price discrimination can reduce efficiency by misallocating output among consumers.
Price discrimination requires market segmentation and some means to discourage discount customers from becoming resellers and, by extension, competitors. This usually entails using one or more means of preventing any resale, keeping the different price groups separate, making price comparisons difficult, or restricting pricing information. The boundary set up by the marketer to keep segments separate is referred to as a rate fence. Price discrimination is thus very common in services where resale is not possible; an example is student discounts at museums. Price discrimination in intellectual property is also enforced by law and by technology. In the market for DVDs, DVD players are designed - by law - with chips to prevent an inexpensive copy of the DVD (for example legally purchased in India) from being used in a higher price market (like the US). The Digital Millennium Copyright Act has provisions to outlaw circumventing of such devices to protect the enhanced monopoly profits that copyright holders can obtain from price discrimination against higher price market segments.
Price discrimination can also be seen where the requirement that goods be identical is relaxed. For example, so-called "premium products" (including relatively simple products, such as cappuccino compared to regular coffee) have a price differential that is not explained by the cost of production. Some economists have argued that this is a form of price discrimination exercised by providing a means for consumers to reveal their willingness to pay.
Budget deficit
A government budget deficit is the amount by which some measure of government revenues falls short of some measure of government spending.
If a government is running a positive budget deficit, it is also said to be running a negative budget surplus.
A government budget is a legal document that is often passed by the legislature, and approved by the chief executive-or president. For example, only certain types of revenue may be imposed and collected. Property tax is frequently the basis for municipal and county revenues, while sales tax and/or income tax are the basis for state revenues, and income tax and corporate tax are the basis for national revenues.
The two basic elements of any budget are the revenues and expenses. In the case of the government, revenues are derived primarily from taxes. Government expenses include spending on current goods and services, which economists call government consumption; government investment expenditures such as infrastructure investment or research expenditure; and transfer payments like unemployment or retirement benefits.
Budgets have an economic, political and technical basis. Unlike a pure economic budget, they are not entirely designed to allocate scarce resources for the best economic use. They also have a political basis wherein different interests push and pull in an attempt to obtain benefits and avoid burdens. The technical element is the forecast of the likely levels of revenues and expenses.
Medium of exchange
Money is the common Medium of Exchange and its most important and essential function is that it is 'measure of value'. Hifzur Rab has shown that market measures or sets value of various goods and services using the medium of exchange/money as 'unit' i.e., standard or the Yard Stick of Measurement of Wealth. There is no other alternative to the mechanism used by market to set or determine or measure value of various goods and services and therefore wealth. Just determination of prices is an essential condition for justice in exchange, efficient allocation of resources, economic growth welfare and justice. Money helps us in gaining power of buying. Thus, this is the most important and essential function of money. To be widely acceptable, a medium of exchange should have stable purchasing power (Value) and therefore it should possess the following characteristics:
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value common assets
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constant utility
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low cost of preservation
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transportability
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divisibility
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high market value in relation to volume and weight
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resistance to counterfeiting
To serve as a measure of value, a medium of exchange, be it a good or signal, needs to have constant inherent value of its own or it must be firmly linked to a definite basket of goods and services. It should have constant intrinsic value and stable purchasing power. Gold was long popular as a medium of exchange and store of value because it was inert, was convenient to move due to even small amounts of gold having considerable value, had a constant value due to its special physical and chemical properties, and was cherished by men.
Critics of the prevailing system of fiat money argue that fiat money is the root cause of the continuum of economic crises, since it leads to the dominance of fraud, corruption, and manipulation precisely because it does not satisfy the criteria for a medium of exchange cited above. Specifically, prevailing fiat money is free float and depending upon its supply market finds or sets a value to it that continues to change as the supply of money is changed with respect to the economy's demand. Increasing free floating money supply with respect to needs of the economy reduces the quantity of the basket of the goods and services to which it is linked by the market and that provides it purchasing power. Thus it is not a unit or standard measure of wealth and its manipulation impedes the market mechanism by that it sets/determine just prices. That leads us to a situation where no value-related economic data is just or reliable. On the other hand, Chartalists claim that the ability to manipulate the value of fiat money is an advantage, in that fiscal stimulus is more easily available in times of economic crisis.
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