According to billionaire Mark Cuban, the "hardest part" of being on ABC's "Shark Tank" is saying two words: "I'm out."
Not all the Sharks were initially biting at a pitch for the SlumberPod, a cover that can be put over a travel crib to give babies a dark place to sleep. "I think about, sometimes, if I had given away a percentage of my business, would it have been right for me? Or was it better that I had to figure out everything and do it myself, which made me stronger, smarter, better and not a one-person company anymore," Greiner said.
"I was in a terrible real estate recession. I owed the whole world so much money and Merrill Lynch came and offered to buy my [real estate] business. They offered me $250,000," Corcoran said. Then "they changed their mind. I thought the sky had fallen."