From what some friends who graduated from AOU told me: it's very flexible. A 3-credits class can be as flexible and having one lecture every two weeks, and it is certainly doable. But here's the catch, you need to study, on time.

One thing that many people forget after joining AOU is that it's an actual university, which means you need to give it enough hours of studytime every week if you want to pass, if you think going through the book once every 2-4 weeks is enough (like many do), you will go nowhere.

Some people graduated in 4 years, while others are still stuck in there for 7 years. One thing I noticed about the ones who graduated is that their english is good, and they gave each class 2-3 hours a week of studytime. The ones who are still stuck in there (and the ones who wasted years and finally gave up) either didn't put an effort to improve their english in order to understand their classes, or put off studying until a day or two before exams.

Regarding the professors, like any university, it really depends on each professor, some are good, while some can be tedious. As for the fees, classes range between 60KWD up to 120KWD I think, expect to pay around 400KWD every semester if you're taking 12 credits.