I wrote several of the vendors that have the book used. One wrote me back and said "...if a person is too lazy to look up on where to get the book that's their problem."
That is why I check around for books before buying one, I've seen this happen many times. A used book for more than a new one.
I bought all three books for less than what they want for the one book, that included shipping too.
Same high prices at Barnes and Noble.