$1.40 -- that's why I read this book. I had a $5 coupon about to expire, plus a 10% off coupon, similarly about to expire. I was about to leave on a business trip and the nearest bookstore that would take my coupons was a Borders Express with extremely limited selection.
For this price, I thought it would be a good throwaway airplane book.
It ended up being only an okay throwaway airplane book.