Convenience Store Effectiveness Model (CSEM) is a self-contained PC application to quantitatively predict operational and financial impact of changes to Convenience Store (CStore) and Financial Services Center (FSC) operations. CSEM includes Simulation Analysis Module and Financial Analysis Module. Simulation Analysis Module includes FSC model and CStore model. CStore model predicts the effect of an unlimited number of changes in store design, customer demand patterns, and checkout procedures on store performance. Financial Analysis Module creates a Profit and Loss (P&L) statement showing cash flows, Net Present Value (NPV), and Internal Rate of Return (IRR) for deploying FSCs using simulation results or user input values. An analyst can use CSEM to provide a sound and quantified basis for developing a business case for investing in new technologies, i.e., FSC, or other design and procedure changes in a convenience store environment.