There is disclosed a method of selling articles of manufacture. The method comprises an electronic communication system to identify one or more articles of manufacture, from at least one manufacturing entity, which are available for purchase by a plurality of potential purchasers and identify pricing milestones in each of a manufacturing phase and a distribution phase, corresponding to a change in commercial risk. Determining a separate price for each pricing milestone to establish a range of prices for the selected articles of manufacture and making conditional offers for sale to potential purchasers at each pricing milestone, with the conditional offers specifying at least a minimum number of articles which must be ordered in aggregate before the conditional offer becomes binding upon a manufacturing entity. Communicating with potential purchasers and aggregating commercial commitments for each pricing milestone, corresponding to a period of availability, thereby selling one or more articles of manufacture.