It is supply and demand, but actually has a fascinating supply chain behind it that needs to be timed perfectly. There is a great Planet Money episode on it: ht

It is supply and demand, but actually has a fascinating supply chain behind it that needs to be timed perfectly. There is a great Planet Money episode on it: https://www.npr.org/sections/money/2015/02/13/386005044/episode-603-a-rose-on-any-other-day https://www.npr.org/sections/money/2015/02/13/386005044/epis...