No information on cost. It does require three residencies with an optional fourth. The class line-up looks interesting to say the least.
A link to the program... https://www.southuniversity.edu/online/areas-of-study/business-administration-and-accounting/business-administration-doctor-of-business-administration-dba Tuition is not posted. You have to contact an admissions rep to discuss the tuition (so says their FAQ page).
Another wonderful note on the info page: Note: This program is not available to residents of Alabama, Oregon, New Mexico, New York, Massachusetts and Washington DC.