The Market for Lemons cars, the dearth of formal credit markets in developing countries, and the difficulties that the elderly encounter in buying health insurance. However, not all players in a given market will follow the same rules or have the same aptitude of assessing quality. So there will always be a distinct advantage for some vendors to offer low-quality goods to the less-informed segment of a market that, on the whole, appears to be of reasonable quality and have reasonable guarantees of certainty. This is part of the basis for the idiom buyer beware. This is likely the basis for the idiom that
Beware the Green-Eyed Monster Beware the Green-Eyed Monster "Beware the Green-Eyed Monster" is the eleventh episode and mid-season finale of the third season, and 55th episode overall from the Fox series "Gotham". The episode was written by co-executive producer John Stephens and directed by Danny Cannon. It was first broadcast on November 28, 2016. In the episode, Gordon discovers that Mario is infected and needs to stop him before he marries Lee, but Mario is one step ahead of him and plans on making it look like he is jealous. Meanwhile, Nygma receives information about Isabella's death and despite shrugging it off, he is