A marketplace server and method for facilitating purchase transactions are provided. A marketplace server may include a routing engine configured to receive an order for goods from a first computing device associated with a first customer, with the order including a first delivery address of the customer. The routing engine also calculates a delivery route to the first delivery address. An offer engine is configured to create an offer for other goods. The offer includes a shipping incentive associated with a second delivery address of a second customer. The offer may be targeted to the second customer based on a proximity of the second delivery address to the delivery route. The offer engine sends the offer to a second computing device associated with the second customer. Upon receiving an acceptance of the offer from the computing device, the offer engine processes a purchase transaction for the offer.