If you have a signed photo of Aska Yang, and can prove that the photo is the original signed by yourself or my authorized representative, then this signed photo can indeed be sold at a certain price in the second-hand market. Usually, the price of signature photos will be affected by many factors, such as the preservation status of signature photos, the place and method of signature, the time and place of signature, the regional cultural atmosphere and so on.

It should be noted that the selling price and market conditions of signature photos will be affected by many factors, and not all signature photos have high value and return on investment. If you plan to use the signature photo as an investment or collection, I suggest that you conduct detailed market research first, and then make a decision after considering the related risks and cost factors.