1. A computer system comprising: at least one processor, wherein the computer system is configured for: (A) receiving an item notification associated with a user, wherein the item notification comprises an indication that the user wishes to purchase a particular item; (B) receiving a location associated with the user; (C) receiving delivery/pickup location information associated with each of a plurality of attended delivery/pickup locations, wherein: i) the delivery/pickup location information comprises a geographic location associated with each of the plurality of attended delivery/pickup locations; and ii) each of the plurality of attended delivery/pickup locations comprise: 1) a primary form of business other than receiving and storing one or more parcels; and 2) a capacity for storing one or more parcels; (D) determining that a subset of the plurality of attended delivery/pickup locations are located near the user, based at least in part on: i) the location associated with the user; and ii) the location information associated with each of the plurality of attended delivery/pickup locations; (E) receiving inventory information associated with each of the subset of the plurality of attended delivery/pickup locations; (F) searching the inventory information associated with each of the subset of the plurality of attended delivery/pickup locations for the particular item; (G) at least partially based on searching the inventory associated with each of the subset of the plurality of attended delivery/pickup locations, determining that at least one attended delivery/pickup location of the subset of the plurality of attended delivery/pickup locations has the particular item in stock; and (H) transmitting an inventory notification to the particular user, wherein the inventory notification comprises: i) an indication of the location of the at least one attended delivery/pickup location; and ii) an indication that the at least one attended delivery/pickup location has the particular item in stock.