There is a wide range. I think the solutions for many years to come will be of a hybrid kind, increasingly digital but with a mix of text. On the development side, the costs attached to developing a learning resource come to hundreds and hundreds of thousands of dollars. The cost of printing a book and binding it is probably 10% to 12% of the actual cost. The cost is in the digital, in the content development. When it goes digital without adequate protection, it could be subject to illegal reproduction. You don't have to use a photocopier—it's a click of a button. It's easily dealt with. Digital locks help that situation, but very little of this is finding its way into the classroom today.
On March 6th, 2012. See this statement in context.