The paper proposes a Petri net extended with stochastic priced transition and discusses the possible application domain of this new type of Petri net. Firstly we define stochastic priced Petri net (SPPN) by adding a stochastic price to transition. Then we use SPPN to establish the economic model for a simple business process and make profit analysis. Finally we draw a conclusion that using SPPN in business process modeling is feasible.