Create a responsive sports memorabilia web application using React and eBay API, which enables users to browse, purchase, and sell authentic sports memorabilia items. Implement a user-friendly interface with easy navigation and incorporate search and filtering options to enable users to quickly locate their desired items. Include a secure payment gateway that supports multiple payment methods and integrate a messaging service to facilitate communication between buyers and sellers. The web app should also allow users to create their own personalized profiles, manage their transactions, and receive alerts for newly added items. Finally, ensure that the web app is visually appealing and consistent with modern design trends.
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