Dec 02, 2013 Cyber Monday Basketball Deal! Looking for a great deal on a basketball trainer this Cyber Monday? Use the code THANKS at checkout and you will receive 10% off of your entire purchase. Guarantee3 is a new basketball trainer designed to help you perfect your jump shot and rapidly improve your dribbling by using the science of muscle memory. Guarantee3 is also a perfect gift for the budding basketball star in your family. Designed to be used by all ages, give the gift of a great basketball shot this holiday season.