Athabasca University has an online DBA for 21 credits.

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Most DBA programs require a master's to get into the program. No financial aid for US students and there are many less expensive options for US students in the US. And by financial aid, I mean student loans. There aren't federal grants beyond a bachelor's degree which is odd since so many careers require a master's degree or doctorate. It's still a minimum of 3 years for only 21 credits which seems a bit odd. It also requires a one week on site residency every year for the first 3 years. The application fee is really high. There's a program admission fee (haven't seen one of these in ages) and it's quite a chunk of change. They have all kinds of fees tacked on too.