The Defense Commissary Agency, which operates 246 government-owned stores worldwide, touts an average savings for military members of at least 30 percent compared with regular retailers.

The Pilot compiled a basket of 30 randomly chosen common food and household items, priced them at the Norfolk Naval Shipyard commissary in Portsmouth and then compared prices for matching items at retail stores nearby.

Users can mouse over or click each of the items on the grid to see how the prices differ from the commissary.