Deliberative monetary valuation (DMV) methods have been proposed as a more democratic alternative to traditional contingent valuation methods (CVM) for natural- resource decision making. These deliberative methods are subject to criticisms. One issue of concern is that the socio-economic inequalities among members of the deliberative group may severely impede communication and consequently distort deliberative outcomes. To examine such possibility we applied the deliberative methodology in a case study of forest conservation in Colombia. We found that those individuals who assumed social (environmental) leadership positions tended to dominate group discussion. Nevertheless, the variations in the capacity to engage in group deliberation were better explained by participants' personal characteristics than external constraints or group pressure. Also, there was little evidence that leadership and domination in group deliberation significantly influenced participants' stated WTP. We conclude that DMV is vulnerable to the background inequalities among group members. The democratic potential of deliberative methods should be critically examined in terms of the capacity to communicate effectively and equally.