Here is an English translation of the answer to your question about the cost of a postage stamp, in over 200 words:
The cost of a postage stamp can vary depending on a number of factors, such as the country, the type of stamp, and the method of postage. In general, the price of a standard postage stamp in most developed countries tends to be relatively affordable, typically ranging from a few cents to a few dollars.
In the United States, for example, the current price of a standard first-class postage stamp is $0.60 USD. This stamp can be used to mail a letter or a small package within the United States. The price of postage stamps in the US is set by the United States Postal Service (USPS) and is reviewed and adjusted periodically to account for changes in the cost of materials, labor, and other operational expenses.
In the United Kingdom, the current cost of a standard first-class stamp is £0.85 GBP, while a second-class stamp is £0.66 GBP. The Royal Mail, the UK's national postal service, is responsible for setting the prices of postage stamps in the country.
In other countries, the cost of postage stamps can vary widely. For example, in Canada, a standard domestic stamp currently costs $1.07 CAD, while in Australia, a standard letter stamp costs $1.10 AUD. The prices are set by the national postal services in each country, taking into account factors such as inflation, operational costs, and the needs of the postal system.
Ultimately, the cost of a postage stamp is an important consideration for individuals and businesses who rely on the postal system for their communication and shipping needs. Understanding the current rates and any changes in postage prices can help ensure that the appropriate amount is paid for the desired level of service.