The choice of the proper type of an electronic auction has become an important part of the successful result from auction usage. Basic auction types are nowadays often extruded by the others because of their relevance in particular situation and different savings that bring to purchaser. The approach of Kruskal-Wallis ANOVA was used to determine whether the savings mean vary for different e-auction types. Results of this paper can supplement the existing research in the area of e-auction complexity settings.