The answer to the question of why a minimum trade is not indicated on a website depends on the type of website and the purpose of the trade. In many cases, a website may not indicate a minimum trade because it is simply not necessary. For example, if the website is a marketplace for buying and selling goods or services, it may not be necessary to indicate a minimum trade amount since the trade will be determined by the buyer and seller. On the other hand, if the website is an online stock brokerage or other financial service, a minimum trade amount may be necessary to ensure that the customer is able to access the service and that the service is able to protect itself from risk. In this case, not indicating a minimum trade would be an unprofessional error on the website.