i think that those brokers are let us say a big rip of like jeppesen or UAS or Jetex for those kind of African countries, are you so sure they will pay the navigatin fees on time? paying an extra of 10% of the amount you have to pay for theird party invoices? what a joke!
For me i took the liberty to buy the databse from econflights and it proved to be better than the rest, if you want to learn also about how to get a permission from a to z then all it's written there!
i've entered UAS & Jeppesen UK and one thing i will tell you, they DO NOT HAVE QUALIFIED PERSONNEL, if you do not believe me just go there for visit and see exactly who is doing the request for you!
just go and see the site i told you about and it will blow your mind away!
jerry