Despite the existence of research in the field of electronic reverse auctions (eRAs), there is still a limited understanding of the determinants of auction savings that exist in this process, especially factors that can change information asymmetry during auctions. In comparison with other studies, attempts have been made to test the effects of various levels of information asymmetry through the prolongation of auctions and through changes to minimum bid amounts on auction results, as well as other modifiable variables. More than 11,000 eRAs were analysedusing data from a leading auction platform in Central Europe. The application of the Mann–Whitney–Wilcoxon test on data divided by medians of analyzed variables has been confirmed as a valid method for verifying the significance of the developed conceptual model relationships. While confirming several relations indicated by laboratory experiments and other studies, several findings to the contrary of the expected relationships were also confirmed.

尽管在电子逆向拍卖（eRA）领域已有研究，但对于此过程中存在的拍卖节省决定因素，尤其是在拍卖期间可能改变信息不对称性的因素，仍然知之甚少。与其他研究相比，已尝试通过延长拍卖时间，更改最低出价金额对拍卖结果以及其他可修改变量来测试各种级别的信息不对称的影响。使用来自中欧领先拍卖平台的数据分析了超过11,000个eRA。曼-惠特尼-威尔科森检验在数据除以分析变量中位数后的应用已被确认为是验证已开发概念模型关系重要性的有效方法。