As for which commodities will not increase in price for decades, this varies according to different situations such as countries, industries and commodity types. For example, in China, due to the government's long-term price control, the prices of some daily necessities have remained stable for a long time, such as bread, vegetables and gas. However, with the continuous development of market economy, the prices of these commodities will gradually rise. In addition, the prices of some high-quality and cost-effective commodities may be stable for a long time, such as movie tickets and books of certain brands. In addition to daily necessities such as bread, vegetables and gas, there are some other commodities that have not increased in price for decades, such as:
1. American stamps: The price of American stamps has remained stable for a long time, and the face value of most stamps is the same as that of decades ago. On the one hand, this is because the postal department has implemented price control for a long time, and on the other hand, the collection value of stamps has caused a certain market demand.
2. Capital Airport Construction Fee: Beijing Capital International Airport Construction Fee has been implemented since 2000, and it has been 20 years now, and 20 yuan is charged every time. Although the service quality and scale of the airport have been continuously improved, the construction cost has not changed.
3. MTR fares in Hong Kong: 1997, the MTR Corporation began to implement the fare structure of HK$ 4-9, and has maintained it ever since. Although prices in Hong Kong have soared, subway fares remain unchanged.
4. Antiques: Some antiques, such as ceramics, calligraphy and painting, may not increase in price for decades or even hundreds of years, because the value of these collections is not only reflected in economic value, but also in historical, cultural and artistic value.
5. Works of art: Some works of art, such as famous paintings, musical works and literary works, may not increase in price for decades or even hundreds of years. This is because the artistic value, cultural significance and the reputation of the creator of these works of art affect their economic value. For example, Shakespeare's plays have always maintained a high value and are not affected by market changes.
6. Household appliances: Due to the continuous improvement of production technology, the enhancement of scale effect and fierce competition, the prices of some household appliances such as refrigerators and washing machines have remained relatively stable for a long time, and may even decline with economic development and technological innovation.
7. Books and periodicals: The prices of some books and periodicals may remain stable for a long time. On the one hand, their production costs are low, on the other hand, their sales channels are closely related to the changes in the market. Rapid price adjustment may affect their sales and reader loyalty.
In a word, the stability of commodity prices is related to many factors, such as production technology, raw material cost, market competition, government regulation and cultural value. Only by fully considering these factors can we better understand and explain the long-term stability of commodity prices.