1. A computer-implemented method, comprising: under control of one or more computing systems configured with executable instructions, detecting, with a weight determining element positioned at an inventory location within a materials handling facility, a change in a weight at the inventory location resulting from a removal of an item from the inventory location; determining, based at least in part on the change in the weight, that a user has picked an item from the inventory location within the materials handling facility; in response to determining that the user has picked an item, sending for presentation to the user, first item information and second item information, wherein: the first item information includes a representation of a first item determined to be associated with the picked item; and the second item information includes a representation of a second item and is selectable by the user to replace the representation of the first item as more accurately representative of the picked item; receiving a user input selecting the representation of the second item; and determining that the user has placed the picked item into a tote; adding a second item identifier associated with the representation of the second item to an item identifier list; and sending for presentation to the user, an item identifier list representation, wherein the item identifier list representation includes the representation of the second item.