Computer-implemented systems and methods for determining the value of display space in a retail store are provided. These values of display space are determined based on measured traffic densities in the retail store. Traffic density is used as a metric for real-world customer activity and customer patterns in the retail store. To determine traffic density, measurements are obtained from one or more sensors in the retail store, where the measurements include spatial information pertaining to a region of the retail store. Traffic density can provide a quantitative, accurate and unbiased metric with which to determine a value associated with displaying products in a region of the retail store.