Patent ID: 8364551

Claim:
A computer-implemented method comprising: under control of one or more computer systems configured with executable instructions, receiving a first order for a first item from a user, the first order including a first payment type; after receiving the first order, receiving a potential second order from the user that includes a selection of a second item and a second payment type; comparing the first payment type and the second payment type to determine if the first payment type is a same payment type as the second payment type; determining if the first order remains open; in an event the second payment type is the same payment type as the first payment type and the first order remains open: determining that consolidation of the first order and the potential second order is available; predicting a cost associated with the consolidation of the first order and the potential second order; predicting a cost associated with the first order and the potential second order when the potential second order is not consolidated with the first order; calculating a cost differential between: (i) the cost associated with the consolidation of the first order and the potential second order, and (ii) the cost associated with the first order and the potential second order when the potential second order is not consolidated with the first order; and serving the cost differential for presentation to the user; and in an event the second payment type is a different payment type than the first payment type: determining that consolidation of the first order and the potential second order is not available; and providing a prompt that allows the user to change the first payment type or the second payment type so that the first payment type and the second payment type are the same payment type.