Clone this Repo, download the .ZIP of master, or grab the Latest Release (Recommended) and you're good to go!
This will and an "LTV" Submenu Item to MemberPress that will create a Searchable and Sortable table of each User's Completed Transactions.
MemberPress doesn't play well with the global $wpdb object, so the table's data is cached for a week for performance reasons. If this data needs to be manually flushed, click the "Refresh Table Data" button at the bottom of the screen.