The article includes a link to a Google spreadsheet listing 135 books, from sophomore to first-year graduate
level, and their current prices.
I'm astounded that Cengage now charges $400 each for some books. On the other hand, a small but growing
number of high-quality books are being self-published at very affordable prices.
Comments are welcome here or on the blog. I would be especially interested to learn of other examples
of self-published books that are being used as texts outside the authors' institutions.