Corbis
Price: $$$
Images: Photostock (pixels), Motion Videos, Music, etc...
How Many: Over 100 million
Corbis is a creative resource for advertising, marketing and media professionals worldwide, helping to bring creative work to life with the highest quality photography, footage and rights services. Corbis offers a preeminent collection of more than 100 million creative, entertainment and historic images. It is privately held by its Chairman Bill Gates, who founded the company in 1989. Check it out.
Jupiter Images
Price: $200-$1,000
Images: Photos (pixels)
How Many: Over 3,000,000
Jupiterimages provide creatives with quality stock images that enhance the design of any project. As experienced stock photography professionals, we are dedicated to offering premier rights-managed, royalty-free and subscription stock photos backed by friendly service. Also, they sell DVD/CD collection of images. Check it out on their website.