# International Trade mechanics When there is a case where a player wants to buy or sell something in a foreign country, first he has to buy Trade Visa of a country he wants these operations to happen in. Other countries\` markets are not visible until a player travels to the country of interest and for that he will also need a Travel Visa. Taxes from players buying and selling transactions are paid to the country budget and HEX owner depending on where they are made. Items bought by a player can be delivered via automated delivery system. Transportation tax has to be paid too. Transportation tax is paid to all the countries\` budgets in which the delivery is happening, and HEX owners of the starting point and ending point of delivery. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://whitepaper.ertha.io/ertha-whitepaper/game-mechanics/international-trade-mechanics.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.