Do the Best Scholars and Economists Attract the Highest Speaking Fees?

External prominence (measured by the number of pages indexed on search engines or TED talk invitations) can be capitalized on the speakers' market while research performance (measured by publication and citation indicators) cannot. There is thus a clear distinction between the capitalization of external and internal prominence. Success through authorship of books is also positively correlated with speaking fees, however once we control for external prominence the statistical significance disappears. We find that academics profit from having been awarded a major book prize.