LettersOfNote.com:

In 1961, New York Post columnist Leonard Lyons contacted John F. Kennedy after seeing Presidential autographs for sale in a store. At the time, George Washington’s was priced at $175, Ulysses S. Grant's at $55, Franklin D. Roosevelt's at $75, Teddy Roosevelt’s at $67.50, and JFK’s at $75. Below is the response mailed to Lyons.