This report aims to understand the reasons behind producers' marketing channel choice, and the effects of those choices on production and returns to producing tomatoes. The report is organized as follows. Section 2 summarizes the findings of the mesostudy and their consequences for the micro-study. Section 3 presents the sampling method and questionnaire, while Section 4 contains descriptive statistics from the survey and identifies the most important variables. Section 5 sets the empirical strategy and econometrical specifications. Finally, Section 6 discusses the results and concludes.