Numerous interacting factors determine the international and domestic prices of oil.
The price of oil is no longer an important determinant of the economic health of the West. To create the same amount of economic output, manufacturers use much less oil than they used to.
Moreover, today, there are futures contracts, which allow one to fix the price of purchased oil well in advance. There are options contracts which can be used to limit one's risks as a result of trading in such futures contracts.
So, why is the price of oil going through the roof?
Because oil has become a form of investment and a hedge against rising inflation. People plough their savings into oil and speculators drive the markets. As Saudi Arabia correctly observes, the price of oil is no longer determined merely by supply and demand.
Who decides on the domestic price of oil and its derivatives?
In some countries, prices are fixed entirely by market forces, supply and demand, usually through specialized exchanges (e.g., the Rotterdam Exchange). The market is completely deregulated: exports and imports are totally allowed and free.
In other countries, prices are fixed by a committee of representatives of the government, the oil industry, the biggest consumers of oil, and representatives of households and agricultural consumers.
In most countries, prices are changed every 3 or 6 months based on the cost of oil at a certain port of delivery. In Israel, for instance, the price of oil fluctuates every three months according to the price of oil delivered in certain Italian ports (where Israel gets most of its oil delivered). This is an AUTOMATIC adjustment.
In a few countries the prices are fixed by the competent Ministry in accordance to the ACTUAL costs of the oil (importing, processing and distribution) + a fixed percentage (usually 15%). This is called a COST PLUS basis pricing method.
The international price of oil is determined by the following factors:
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