A managed print system for analyzing performance of a print device may include a computing device and a computer-readable storage medium in communication with the computing device. The computer-readable storage medium may include one or more programming instructions for receiving a black and white print volume variable associated with a print device, receiving a color print volume variable associated with the print device, determining a black and white cost variable associated with the black and white print volume variable and determining a color cost variable associated with the color print volume variable, determining a standard relationship, determining an empirical relationship, determining, based on the empirical relationship, whether the print device has a poor fit to the standard relationship, and in response to the print device having a poor fit to the standard relationship, determining which of the variables influenced the poor fit.