Smile Direct Club says it started with the simple idea that everyone deserves a smile they love. Over time, the company has grown to over half a million customers. It claims it's done that by creating SmileShops, using 3D printing facilities and having licensed doctors guide customers through their smile journeys. Smile Direct Club says the little invisible thing it delivers gives customers a lifetime of confidence. The company invites you to get a smile you'll love for $85 per month.