Asked in Baseball Memorabilia
What is the value of a baseball signed by Albert Pujols with a Sharpie pen?
An Albert Pujols single signed baseball is worth about $250.-$400.
Value is based on average prices of recently closed auctions. Prices may vary based on condition, and the type of authenticity that accompanies the signature. Letters of authentication from companies that witnessed the signing like Steiner Sports will sell at a higher price than third party authentication like PSA/DNA. Letters from less known and trusted authenticators will sell for less. Signatures that are not authenticated could sell at half the market value or less.
Other factors that will effect the value would be how well the signature stands out. Blue ballpoint pen would be most preferred over sharpie which tends to "bleed" on a baseball. A sharpie signature will stand out better than a ballpoint pen, and if you got away with a clean signature it might sell for more. But I will not recommend to have a baseball signed in sharpie.
For more info read my newsletter "how much is my Autographed baseball?" link below.