Purchase Access Online Purchase access to your course materials online. SAM Grace PeriodStart using SAM without payment during the grace period. The grace period lasts up to 14 days, depending on the length of the course and your institution. If you access SAM through an LMS, your grace period starts when the class is available. If you access SAM directly through sam.cengage.com, your one-time grace period starts when your account is first activated. Purchase Cengage UnlimitedGet access to your course materials, eBooks, and study tools with Cengage Unlimited. Purchase Course MaterialsPurchase access to your individual course materials. Contact your instructor for help purchasing your access code. Print RentalsRent a printed version of your textbook. Enter Your Key CodeEnter your course key or key code to enroll in your SAM course and gain access to your online course materials. Enter your key code to gain access to your online course materials. View Your OrdersView all current and past orders that you have placed with Cengage. Purchasing ProblemsThere are some common problems you might run into while purchasing access. RefundsThe return policy depends on the type of materials purchased. Retake a Course for FreeIf you need to retake a Cengage course, you may be able to do so for free. Contact support to see if you are eligible. More information Purchase Cengage Unlimited SAM Grace Period Refunds Use Cengage Unlimited Outside the US What's Included in Cengage Unlimited? Multi Term Purchase Options Cengage Unlimited Career and College Success Tips Navigating Your Cengage Unlimited Dashboard Cengage Unlimited Rental Options in Your Dashboard Student Guide for Accessing Your Cengage Unlimited Plan Take a Tour of Cengage Unlimited Take a Tour of Cengage Unlimited eTextbooks