An authentic Joe Biden, the experts say, is worth about $10. Same for Dick Gephardt and Michael Dukakis. Even a Gary Hart fetches only about $25 and the late Hubert H. Humphrey - well, you'd be lucky to get subway fare.
Nonetheless, there is money to be made from the signed correspondence and autographed pictures of politicians, provided one has some knowledge about a market that is not only quirky but also full of items that are not what they seem. Not many novices would suspect that, say, Pat Nixon material has considerably more value than John Poindexter material. 'Hot Time for Collectors'