The Best Case Scenario / Worst Case Scenario Close.  This is a great close, because it is just about imparting simple logic about your own belief system in the product you represent to your prospect – and that the end result is that he/she has nothing to lose.

IT GOES SOMETHING LIKE THIS:   “Mr. Prospect, whenever I’m making a decision, I try to ask myself:  What’s the Best that can happen & what’s the worst that can happen?  So then, let me ask you, what’s the Worst that can happen?  You go ahead and buy our product… knowing that you can return it at any time – because the success is guaranteed.  The only downside in this case is that you’ll have wasted a bit of your time.  But the best that can happen is:  I will give you a product that will give you PLEASURE – PERFORMANCE – PRODUCTIVITY, and give you the kind of ENERGY in your life you’re really looking for.  I think you’ll agree that the minor risk is far exceeded by the extraordinary upside, CAN WE GET STARTED TOGETHER?”