This is a barely used copy that originally costed $30 new from the AAMC. I thoroughly erased any and all marks that were in it (there weren't many) so that you can use the quiz questions to the fullest potential. It is a great resource and I used it to test myself after studying my ExamKrackers books. There are plenty of questions from actual past exams and they are pretty representative of what I saw when I took the exam last August. Thanks for looking!