Items autographed by LeBron James may be an excellent investment. His signatures, either alone or on items, does not command as high a price as it may in the future. The biggest contributors to its increase in value will be if he is inducted into the Basketball Hall of Fame (the odds are quite good on this) and if he wins an NBA Championship (still to be seen). If both events occur, and LeBron James continues to perform as projected, then it can be reasonably expected to see his stock rise. If you have one of his rookie cards, it is not a good idea to have it autographed. Instead, get his autograph on a plain piece of paper or in an autograph book. Autographing rookie cards hurts the value of both the card and the autograph.