Six factors determine the price you are offered for your book.

The condition of your book
The current inventory at the campus bookstore
Demand for the book in the national used book market
A new edition has been published, making the previous edition obsolete
Custom books/packages missing components such as access codes or workbooks
The instructor will not reuse the title the following semester

Why am I offered different prices for my book at different times of the year?

When the bookstore buys books throughout the semester, more often than not the pricing is based on the national wholesale value of the book. During the last two weeks of the semester, the value of the book is increased because the needs of the faculty are known, creating a demand. The number of books bought back is calculated considering these major factors: Previous sales history
Class cap
Estimated enrollment
Current store inventory of title

Why does my book have no value?

If you are informed that your book has no value, it could be for one of the following reasons:

It is no longer being used on your campus
The national market is “flooded” with copies
It has been replaced by a newer edition
It is no longer in print
It is a custom book that has been revised by the faculty member