5 ms·Used for $4 to $9by wagoYYP 4y agoUsed for $4 to $9shivajikobardan 4y agoI am talking about content of the book.t-3 4y agoIt's hard to judge content before you've read it. Price is easy to judge, and for the used market gives some signals as to quality.sargstuff 4y agoso read the publically available electronic version first or check out a version from library?sargstuff 4y agoebooks allow one to invert the review comments.