a method for brokering a repair to a vehicle with multiple potential repair service providers by temporarily associating a random user - anonymous session identifier with a brokering session for the vehicle &# 39 ; s access device , transmitting the session identifier and a service request to each potential service provider , receiving multiple offers identifying a cost associated with responding to the repair request , determining a total response repair cost aggregated from the responding providers , selecting a winning offer , determining a cost to the access device for resource usage during the brokering session representing , reducing a gross revenue to the selected winner by the total response cost ; and subsequently , re - using the session identifier for aggregating other usage records and offsetting costs to compensate non - winning responders .