You can read: Srinivasan, S. S., Anderson, R., & Ponnavolu, K. (2002). Customer loyalty in e-commerce: an exploration of its antecedents and consequences. Journal of retailing, 78(1), 41-50.
I guess the best method is a survey with scenario description. It would be a nice step. you can build scenarios and try to see how the sample reflects on them. The scenarios need to be crafted carefully.