The effects of (private, small-scale) copying on the pricing behavior of producers of information goods are studied within a unified model of vertical differentiation. Although information goods are assumed to be perfectly horizontally differentiated, demands are interdependent because the copying technology exhibits increasing returns to scale. We study the effects of the resulting strategic interaction by comparing the optimal choices of a multiproduct monopolist controlling all n information goods with the Nash equilibria of the pricing game played by n oligopolists.