Not on the level of an individual person, but on the level of groups of people. People in one neighborhood would have shops with locked boxes and people in ano

Not on the level of an individual person, but on the level of groups of people. People in one neighborhood would have shops with locked boxes and people in another neighborhood would have shops with unlocked boxes. And those neighborhoods could very well have different ethnic compositions. In this case, you can still buy an item when the box is locked, but the same thing could lead to stores in some neighborhoods not carrying commonly stolen items at all.