What is the value of a Barry Zito autographed photo?

A Barry Zito signed 8x10 photo is worth about $15.-$25. Price will vary based on condition, and the type of authenticity that accompanies the signatures. Photo composition, how well the photo displays the signature, the type of ink used, and how it stands out in contrast to the photograph will also effect the value. Sharpie would be most preferred for a photo. Larger and more desired pictures could sell for more. Add for inscriptions. Signatures that have not been properly authenticated could sell at half the market value or less.