The value of an Elvis Presley autograph ranges from $100 to over $5000. There are several factors that affect the price. One is the object signed. Personalized correspondence from Elvis, or signed scenes from certain films garner the highest prices. If the item signed also has the signature of one of his co-stars, like Ann-Margret, the value is even greater. Because Elvis was fairly prolific as a signer, it is important to have any autograph of his authenticated. Forgeries abound, and it is not uncommon for someone to buy a substantial fee for a worthless scribble. If the signature is authentic, the seller should be able to provide a certificate of authenticity from a reputable firm. If not, question the legitimacy of the autograph. If you own an autograph of his, have it authenticated and keep it with the certificate of authenticity.