Aspen (www.aspen.edu) offers a low tuition MBA, which was as low as USD 4,000 at one time, although the tuition as gone up in recent years. This is still a very affordable MBA.
For more information on this MBA, please read up at:
http://www.onlinedegreereviews.org/college/aspen-university-reviews/mba-1089/
Now, most students enrolled in a school are reluctant to say something bad about the school because this would ruin the reputation of the program they are doing and investing in. So predictably, the reviews are positive.
For anyone looking for an affordable US-based MBA, Aspen is worth a look. EUCLID is comfortable making positive mention of other programs because applicants interested in EUCLID have a specific profile and interest (intergovernmental status, global south exposure, specialized MBAs).