Changing the eBay title can affect sales, depending on the nature of the change. If the title is optimized properly and clearly includes relevant keywords and product details, it can improve the visibility of the product in search results, thereby increasing traffic and sales.

However, if the title is changed improperly, resulting in a mismatch between the product and the search terms or inaccurate information, it may reduce exposure and sales. Therefore, you should carefully consider and research before changing the title to ensure that the title is accurate, relevant and attractive.