On websites dedicated to selling souvenirs from history's most notorious murderers, a photograph signed by Charles Manson will set you back $500.
A densely handwritten letter by the now deceased cult leader and convicted murderer goes for $750. And a purported prison ID card for Patricia Dianne Krenwinkel, a former member of Manson's "Family" who was likewise convicted in 1971, is on sale for $5,000.
