Here is a side by side comparison of Silver and Gold package photos. Both use the same base image. The gold photo then layers an image that has been flashed with a powerful strobe light to add detail and texture.
The images appear very similar because they are. But a close inspection will reveal the subtle differences. Differences that could draw a discerning client to be interested in a property. For instance notice the views from windows between the images. Also the evenness of the shadows and light.
Only the interior images have been flashed with light. The exterior images use a technique called High Dynamic Range or HDR. The difference between the Silver and Gold package here is less pronounced, but can make a difference.
More than twice the amount of work and time goes into the Gold package. In my humble opinion it is worthwhile for higher end properties, especially with furnishings or good views of the outdoors.