For me, the business model of this kind of service is important. Where a commission is paid by the dealer to the service, it would seem to me that there's a po

For me, the business model of this kind of service is important. Where a commission is paid by the dealer to the service, it would seem to me that there's a potential for a conflict of interest as the service gets more money, based on how much the dealer charges for the car. In that kind of setup is there really a good incentive for the service to haggle hard on the customers behalf...? I'd prefer a payment model based on either a flat fee paid by the customer, or perhaps something based on the amount saved from the list value of the car.