When I load inventory I occasionally have questions for suppliers. Sometimes the question is because of the photo. I find myself thinking that a catalog with no photos would have avoided my attention to the matter entirely. Obviously the same with customers. That said, I think the ratio of listings with photos to listings without also has an effect. In a real sense, a supplier's listings are competing with one another. If the catalog has no images or few images, I think a listing with no image (and that is not a unicorn) will sell much more quickly than in a catalog where they are only listing with no image.
For myself, I am rather indescriminate, as we have seen by my purchasing that new release with the awful photo. I guess dahlias are an exception to my disinterest in gambling. On the other hand, my odds of liking it are better than planting seeds.