Abstract: A method and system in which the system receives input data for a first unit to determine a unit feature signal and a unit demand signal including predictive demand features. The system then determines, for the first unit at each of a plurality of offer values, a set of associated estimated probabilities that the offer value will be accepted within a short-term time period; determines an expected time-to-sell for the first unit at each of the plurality of offer values; determines an optimal offer value for the first unit; and displays the optimal offer value for the first unit on a webpage.