Yup, this happened to me: I saw a very low price on a Chez Scheme book and bought it. I am fairly certain the book was an unauthorized copy. I felt like the aut

Yup, this happened to me: I saw a very low price on a Chez Scheme book and bought it. I am fairly certain the book was an unauthorized copy. I felt like the author and publisher were cheated, but to be honest I did the simplest thing and just kept the book and I am gentle with it when opening it for reading so it does not fall apart.