Any chance 4 Ethiopian developer?

Hello all, I am a programmer in a government agency in Ethiopia and I have been writing web based applications for some time now. But recently I have been obsessed with the idea of writing small web based applications for small/medium business as my own business. So I developed an application as MVP (Minimum Viable Product) and gonne out and spoken to a couple of potential customers. The application is a basic income and expense tracking system with invoice in its center. And with my meeting with potential customers I have already found people who are willing to use the system for free with a promise to find me 2 future paying customers each. According to the promise, the future customers would pay me 2500Birr (i.e 125USD). These were super awesome deals to me, if I get 2 paying customers for my applications I will end up owning 250USD, and that is my salary. I was feeling happy already until I started reading HN, reddit programmer and other success stories in internet. I was constantly reading about these amazing pricing schemes, and how I could easily not just get that amount once but make it my monthly income. But to my frustration we don’t have any kind of online currency in the whole country here in Ethiopia so I have to resort to my original idea as these all making online stories seem a fairy tale to me. So I am here to ask the HN community if there is any way to make the online money, selling my applications to customers outside my country, without online currency?