Method of advertising and conducting electronic commercial transactions through Internet

PURPOSE: A method for advertising and electronic commerce on the Internet is provided to sell contents at low prices by associating the contents with advertisements, and to secure the effect of advertising. CONSTITUTION: A CP(Contents Provider) server displays a menu page for selecting digital media contents and discounting prices on a PDA(Personal Digital Assistant) of a subscriber(S10). The subscriber requests for a discount by using a button(S11). The server selects an advertisement inserted to the contents selected by the subscriber(S12). The server displays a discount rate calculated depending on the value of the advertising contents(S13). If the subscriber requests for a higher discount, the purchase order is deferred(S14). If the subscriber selects other advertising contents, the number of advertising contents and a discount rate thereof are informed to the subscriber. Upon clicking a purchase button, the server reorganizes the selected digital media contents and advertising contents into one piece of content(S15). Thereafter, the server performs a series of sale processes(S16).