An Internet-based computer-assisted supply-chain management system (SCMS) replaces the archaic commerce systems presently in use. It coordinates just-in-time distribution of items purchased by consumers from a plurality of merchants whereby the inventory in the distribution pipeline is reduced to inventory in transport. It uses regional distributions centers and neighborhood order aggregation facilities for an efficient transfer of items to consumers. Consumers can pick up aggregated orders at an order aggregation facility or have them delivered at a residence. The SCMS phases out conventional checkout registers in favor of web browsers with automatic transaction execution. Retailers can operate with little or no inventory. Window shops facilitate promotion of items and help consumers make selections and decisions with respect to purchases they may be contemplating. The SCMS provides real-time consumption monitoring and forecasts, significantly reduces supply-chain costs and retail prices, promotes economic growth, and minimizes undesirable cyclic economic fluctuations.