Various electronic business-to-consumer models have been presented during the past years with different classifications. Each of these models has different dimensions. This paper uses expert knowledge to identify two key dimensions of business to customer models. Each researcher has his own list of business-to-consumer models, and there are differences in the existing lists. In this paper, some appropriate models are identified through interview with experts and fuzzy Delphi method for launching a business. The positions of these models are determined in terms of identified aspects then. Based on the obtained results, ten electronic business-to-consumer models were specified and the dimensions of the type of product and the type of financial relationship with the customer were determined to provide two-dimensional map. Then using fuzzy Delphi method, the position of these models in two-dimensional map was identified.