Paying More for Enhanced e-Books?

Just what makes an e-book “enhanced” is not entirely clear, but what is certain is that it’s a concept publishers are eager to capitalize on.  Generally speaking, enhanced e-books are traditional text-and-image e-books that have been augmented by audio and video, and often include exclusive supplementary material.   In addition to raising new royalties and rights questions, e-book costs are certainly bumped up by higher production, plus the acquisition of additional rights.

For some context on the enhanced e-book model, Publishing Perspectives posted an interview with Peter Collingridge of Enhanced Editions, and included a video: