Digital identity wallets are software systems that allow users to securely store, manage, and share personal data. While existing approaches have mainly focused on storing identity-related information such as ID cards or driver’s licenses, the use of wallets for use cases beyond, such as managing and sharing shopping data in e-commerce, is still largely unexplored, particularly in terms of user experience (UX). In e-commerce, such wallets offer a promising way for users to share shopping data with online shops in return for, e.g., personalized product recommendations. However, this extended functionality introduces unique UX challenges that differ from traditional identity scenarios. As the success of these systems strongly depends on user adoption, delivering a seamless and intuitive UX is essential. This study evaluates the UX of a wallet prototype designed for managing and sharing shopping data. The evaluation combined an expert-based analysis using a Cognitive Walkthrough with user-based testing involving Thinking aloud, eye tracking, and UX questionnaires. The results revealed several UX issues specific to the shopping data context, as well as recurring challenges already observed in traditional digital identity use cases.