Patent ID: 8566137

Claim:
A system, comprising: at least one computing device; and an inventory calculation application executable in the at least one computing device, the inventory calculation application configured to cause the at least one computing device to: identify a sales listing in an electronic commerce site in which a product is offered for sale on behalf of a seller, the sales listing associated with a seller inventory of the product; identify at least one third party marketplace sales listing in at least one third party electronic commerce site in which the product is offered for sale, wherein the at least one third party marketplace sales listing is identified by scraping the at least one third party electronic commerce site via the at least one computing device, the at least one third party marketplace sales listing associated with the seller inventory of the product; calculate at least one order rate based at least upon data identified from the sales listing and the at least one third party marketplace sales listing, wherein the at least one order rate is associated with to the product offered for sale via the electronic commerce site and the at least one third party electronic commerce site; calculate an inventory depletion rate associated with the seller inventory of the product based at least upon the at least one order rate; and update a quantity of the seller inventory of the product associated with the product in the seller inventory based at least upon the inventory depletion rate associated with the sales listing and with the at least one third party marketplace sales listing.