Apparently on sale today with coupon code RACKETEERS making it like 23.97 for both print and ebook! I feel like I am a marketing shill or something but for real that is a great deal and I have been looking for a racket/scheme book to use for teaching!

edit To follow up - got the book and have been reading through it. Already super impressed with the tone, pictures, lisp history lesson, and particularly the cartoon of guy and gerry!