University of the People:

Students pay a registration fee on a sliding scale of $10 to $50 determined by income and country of residence. University of the People requires a tuition to be paid in the form of a $100 administration fee for each exam a student takes. To complete an Associate degree (A.S.), a student must take 20 exams and 40 exams for a Bachelor Degree, which costs a total of $2,000 and $4,000 respectively. Students who cannot afford to pay can apply for scholarships.

University of the People received accreditation in February 2014, through the Distance Education and Training Council and they have some high profile partnerships (see http://en.wikipedia.org/wiki/University_of_the_People)

http://uopeople.edu/