The present invention provides information useful to various users engaged in real estate transactions. Provided is an information processing device provided with : a graph rendering unit, which renders a graph that expresses the anticipated transaction price for a second real estate property on the basis of the actual transaction price and required transaction time for a first real estate property that has already been sold; and a display control unit that displays the graph on a client device. The graph includes an element representing the probability distribution of anticipated transaction prices, and an element representing the predicted required transaction times corresponding to the predicted transaction prices.