http://www.ku.ac.ke/imag...rsity_Fee_Structure.pdf
Compared to what such a program costs in the diaspora, these prices are too good to pass up.
In addition there are time limits, so with diligent work, at least you have an idea of how long you'll be in the program:
"The Doctorate degree in all Schools shall extend over a period of at least three (3) years from the date of registration for a candidate studying full-time. Part-time candidates shall be registered for a minimum of four (4) years, except that under special cases the Graduate School may recommend to Senate that the candidate may submit the thesis after three (3) years.
No candidate for Ph.D degree shall be registered as a full-time student for more than four years or a part-time student for more than six (6) years.
Maximum period of study may be extended for no longer than nine (9) months and twelve (12) months for full-time and part-time Ph.D candidates respectively, unless under special circumstances."
Best,
Hill