According to the Student Monitor, a private student market research company based in New Jersey, about 5 percent of all textbooks acquired in the autumn in the United States were digital textbooks. That is more than double the 2.1 percent of the spring semester.
Simba Information, a research company specializing in publishing, estimates that electronic textbooks will generate $267.3 million this year in sales in the United States. That is a rise of 44.3 percent over last year. The American Association of Publishers estimates that the college textbooks industry generated a total of $4.58 billion in sales last year.
То есть в следующем году будет процентов 10–15. ОК