I sold six DVD before they came through my pro shop door. I offered a free half hour lesson with each purchase. My customers know that I recomend the DVD's and they will learn from them (because this is what I teach), they get a free lesson to explain what they may not quite grasp at this point (they know I stand behind the presentation), and I know that there will be follow up lessons (this is the light at the end of the tunnel). It is a Win-Win for all fo us !