So how much will it cost you to book former D.C. mayor Adrian Fenty to deliver his “Changing Tomorrow, Today: An Afternoon with Mayor Adrian Fenty” education reform speech at your event? A cool $20,000, plus first-class travel. WTOP’s Mark Segraves reports that industry sources tell him that’s the going rate for Fenty’s new gig. Not too shabby for the former chief executive of the District — at that rate, he’ll only have to give ten such speeches in 2011 to match the maximum amount what he was pulling in yearly as mayor.