In a report created by MDG Advertising, they stated that more than 60% of purchasers see the product image as the number one influencer when buying a product. This image is even more important than the rating, the description of the product, and customer reviews.
Also, different angles and looks of a single product can greatly enhance chances of people purchasing the product.
It is pretty much the same with promotions. Almost 40% of marketers stated that using photos for visual marketing is a very powerful tool. When a good image is paired with the right information, knowledge retention is increased dramatically.
Without a good image, people may only retain about 10% of information.