Evaluation copies may be kept and reviewed for sixty (60) days. If you choose to adopt the books and a minimum of 10 copies are purchased by your institution or your students, the evaluation copy becomes a complimentary desk copy upon notification by Track 2 Success. If you choose not to adopt the books, before or at the end of the evaluation period you must either mail the books back to the address listed at the bottom of this page to avoid being billed or you may choose to keep the books and be sent an invoice for the cost of the books.