Are you sick of searching Google for the same old images? You may even be using copywriter images or searching free stock images which are very difficult to find.
There is also a big market of photos that are owned by professional companies such as Shutterstock or 123RF who charge anywhere from $20 or more per image. The only way to avoid these costs would be to search on google and even then those images are usually low in quality, blurry, watermarked and not very exciting.