Sensor networks are large scale networks of low power devices that collaborate in order to perform a given task. The sensors are limited in battery energy, capacity and computational power. In recent years, researcher have proposed several protocols for such sensor networks assuming that all sensors belong the same authority. In this paper, we introduce the concept of multi-domain sensor networks. We propose a economical mechanism to dynamic management of cost and combine routing algorithm with a dynamic pricing model that we design. With this incentive model, our result present that cooperation in sensor nodes increase and total energy consumption in network exactly reduce.