Is this a new book or a used one. Sometimes stores have used books with bent pages, torn pages, writting on pages. If yours is new, I wonder why that price. Of course it might be an over order and not moving so any price is worth nothing.
Then of course there is the matter of do you need one, want one, can use one, would use one? If it is just going to sit on a shelf, then that's a lot of money.