You can make a special request for a report of your purchases (and/or sales and/or lots of other information) for a specified time period back to the creation or your account (and possibly any guest transactions if you provide the right data): https://www.ebay.com/help/account/requesting-personal-data/requesting-personal-data?id=5089&st=12&po... This is only a report with limited fields displayed, not the actual listing.
