Melissa Gersin is one of the few people to raise their evaluation in the middle of negotiations and not get laughed out out of the show room. Melissa went into the Shark Tank episode with just a prototype, and afterward sold 2,000 units over night, which was just as many as their sold the entire year before. When someone talks about "overnight" success, they don't see the 7-8 years of hard work that got them there.