The purpose of this study was to determine the effect of trust, easies, service quality, and quality of information and purchasing decisions of marketplace Tokopedia. With a survey of college students in three universities in Purwokerto. The sample selection in this study was carried out by a purposive sampling method. Based on the criteria, as many as 103 respondents were sampled and the data collection method was a questionnaire. The data analysis techniques used in this research were multiple regression analysis. The results of the analysis of information have a significant effect on purchasing decisions in the marketplace Tokopedia. Partially trust, easies, as well as the quality of information, has a positive effect on purchasing decisions in the marketplace Tokopedia. While service quality has no significant effect on purchasing decisions in the marketplace Tokopedia