Information and Communication Technologies for Development

We've got the basics of the system working,
the prototype is looking better and better.
This has led to further questions that need to be answered..

Right now, we are working with a dedicated SIM card or phone...
Upon deployment, what system are we going to use?
Do we have to get a short code number from the wireless providers?
Typically, those providers take anywhere from 40 - 60% of the revenue coming in.
Forking over such a huge amount can lead to an increase in the final cost of the system
which defeats the whole purpose since this is specifically targeted at people without deep pockets.

Guess we have to answer this to be able to provide a viable sustainable business plan...