This paper measures the impact of low-cost transport by rail in Malawi on the dispersion of agricultural commodities prices across markets by exploiting the quasi-experimental design of the nearly total collapse of domestic transport by rail in January 2003 due to the destruction of a railway...

The paper proposes a modification of Baulch's parity bounds model to measure the market integration of food markets in developing countries. Instead of extrapolating a single observation of transaction costs, it estimates transaction costs. Predicted transaction costs compare well with survey...