There are big pricing differences between stock image sites, especially for snaps that are different from the over-used smiling call center rep head shots. For example, iStockPhoto uses tiered pricing for images that have a more interesting composition. Shutterstock still uses flat rate pricing. These pie throwing chefs will cost you as much as an image of an orange isolated on a white background. It is worth to give Shutterstock a try. (No, I was not paid to write this).