A system for processing sales transactions may include a first computing device in communication with a buyer-operated computing device, and a computer-readable storage medium in communication with the first computing device. The computer-readable storage medium may include programming instructions for receiving an order including one or more of a commitment of a buyer to purchase an item, and a preferred share value associated with the buyer, receiving contact information associated with one or more third parties, receiving a fractional share value associated with each of the one or more third parties, and in response to a sum of the fractional share values associated with each third party and the preferred share value equaling the purchase price associated with the item, using the received contact information to send a message to each third party. Each message may include the fractional share associated with the third party.