How does the microscope cost compare with paying the technician who will do the diagnosis? Assuming even $1000 per tech - which is roughly the per capita GDP(nom) of many countries - in this case maybe it's just better to buy the scopes in volume from Alibaba?

So the real value of the 50-center may be for people to make their own samples, and use a local shop to upload a cell phone picture to an online analysis service. Running on the cloud, maybe?