A consumable-goods reordering system in which a system controller has access to the signals transmitted by each smart appliance relevant to the environment being monitored, such as a home. Each appliance monitors a particular physical condition that is related to the appliance's usage of a consumable good, senses changes in the condition being monitored, and reports states of the condition. Meanwhile, the system controller memorizes and maintains the states of various processing events, such as when an appliance reported a particular state of the monitored condition. By considering the information reported by the multiple smart appliances, as well as by accounting for the states corresponding to the various events, the system controller is able to continually update a representation of the state of the monitored environment. Having such context awareness enables the system controller to generate intelligently various reorder messages for transmission to the various suppliers of the consumables.