The study has been prepared in June 2005 for the MEDFROL Project "Market and Trade Policies for the Mediterranean Agriculture: The case of fruit / vegetables and olive oil" under the European Sixth Framework Program, Priority 8.1, Policy-Oriented Research, Integrating and Strengthening the European Research Area. Views in this paper are those of the authors and do not necessarily reflect those of the institutions of affiliation, the MEDFROL project and the EU.