Medium and high resolution versions are purchased and downloaded from the PhotoSphere website. PhotoSphere currently has 30 collections, ranging from Active Couples to Backgrounds and Textures. Most collections feature people. PhotoSphere makes a point of emphasizing that the collections include variations in pose, expression, framing, and format for most images. This gives the designer flexibility and variety in compositions that incorporate the images.
Photosphere has a provision for getting rebates on purchase of individual photos.
The full price of individual photos can be applied toward the purchase of CD-ROM Collections. This can be a big help to small businesses or free-lance graphics professionals. The PhotoSphere website has free high resolution photos for downloading, and also has some other goodies. If you are a multimedia professional I recommend a visit to their website. Royalty free photos are purchased for unlimited use without having to pay separately for each use.