The paper proceeds as follows: in Section I, we describe Sierra Leone’s ice industry and the shift in market structure that we exploit for variation. This section describes the basic effect of entry into ice manufacturing on ice and fish quantities and prices. Section II describes the data used in the analysis of relational contracting. Section III presents our core results, quantifying the effect of ice manufacturer entry on outcomes in the ice retail market including supply assurance, trade credit, and loyalty. Section IV concludes.