The story of Dirty Lemon sometimes sounds like a satire about how to sell things to millennials. The four-year-old brand sells its 16oz colourful plastic bottles of lemon water by text message, in packs of six, for $65. “When you restrict distribution, and people are seeing a lot of something, it naturally creates demand no matter what the price point is,” said its founder, 35-year-old Zak Normandin.