Ecampus.com was one of the first online textbook retailers, and it was founded in 1999 by a group of investors including Wendy's founder Dave Thomas. They raised millions of dollars. Today Ecampus is one of the top online book vendors, and they continue to offer outstanding value in buybacks, rentals, and purchases. They also partner with some universities to handle all their student's textbook needs. Some smaller schools don't have physical bookstores on campus and rely on online vendors like Ecampus.