1. A computer-implemented method of quantitatively evaluating alternative convenience store and alternative financial services center operations using a simulation model, comprising: inputting parameter values describing the alternative convenience store and the alternative financial services center operations into the simulation model wherein the operations represent complex interactions between customers, staff and convenience store service points; running the simulation model by the computer wherein the parameter values describing the alternative convenience store and the alternative financial services center operations are transformed into performance results where the transformation is performed in either an unlimited arrival mode or a limited arrival mode: and outputting the results from the simulation model where the results predict the effect of the alternative financial services center's operations on the alternative convenience store.