This observation of Coase (and Emerson) is true only when there are no transaction costs. That means there is no time or expense lost in bargaining, or finding the mousetrap in the first place. No advertising expenses, for example. No incidental expenses can exist in connection with buying a good or service. Using these assumptions, people get what they want with additional expense, and trade however they like without further cost. Although it may seem unrealistic to assume there are no transaction costs, it is very useful to start with this premise. Some activities, like trading stocks over the internet, do have very little transaction costs. | This observation of Coase (and Emerson) is true only when there are no transaction costs. That means there is no time or expense lost in bargaining, or finding the mousetrap in the first place. No advertising expenses, for example. No incidental expenses can exist in connection with buying a good or service. Using these assumptions, people get what they want with additional expense, and trade however they like without further cost. Although it may seem unrealistic to assume there are no transaction costs, it is very useful to start with this premise. Some activities, like trading stocks over the internet, do have very little transaction costs. |