Our mission at UsedHomeschoolBooks.com is to provide the homeschool family with a place where they can get a fair price for their used Bob Jones curriculum, without the inconveniences associated with selling their products themselves. UsedHomeschoolBooks.com is determined to help parents make informed decisions about the used Bob Jones homeschool materials they are purchasing. Please call 308-350-0335 with your questions 11=3 pm CST. Monday through Friday. We also offer a 30-day money back guarantee if you are not completely pleased with the products you receive from us.