I worked for many years as librarian, IT professional. I have a chance to visit library in Ethiopia. As you'r pointed out in your blogs there many university and college student are using ebook, most of them are saying their professor insisting them to have laptop or PC. Here is the big challenge, yes printed book is expensive and event not available in a country to buy, but how many of our students family can afford to by laptop? yes it possible to buy PC today, but how could student use it in college or university. When we come to elementary and high school student do we have a content for country like Ethiopia? As you said, i personally agree ebook much cheaper than printed book.