Question for Nile Printing Works

Hello
Am from Tanzania
I want to know about the price of books printing.
Are the children books five of them.
Features;
-full color books/ black and white (separate price how much for full colour and black & white)
- pages, three books 20 pages. One books 11 pages, the last book have 16 pages.

my contacts: +********
email: lilyjanu@gmail.com

Looking forward to hear from yoo soon.
Regards
Lilian