The present study aimed to investigate the spatial price transmission of starch, addressing the major producing regions. The specific objectives were to identify their long-term behavior and to verify possible asymmetries on the price transmission. The analysis of price transmission among the markets indicates that prices cointegrated themselves in the long run, leading to the Vector Error Correction Model (VECM). Through the econometric regressions it was possible to verify the application of the Law of Price for only a region under analysis. This study concluded that the markets for starch were not spatially integrated. Thus, it was possible to infer that the market for starch showed a competitive inefficiency.