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 viewers and had an overall rating of 1.7 in the 18–49 demographic. "Mad City: Beware the Green-Eyed Monster" received generally positive reviews from critics. The episode received a rating of 71% with an average score of 7.0 out of 10 on the review aggregator Rotten Tomatoes. Matt Fowler of IGN gave the episode a "good" 7.6 out of 10 and wrote in his verdict, "'Beware the Green-Eyed Monster' was a decent fall send-off for "Gotham", focusing heavily on Jim and Lee's tortured love story. Last week, it seemed like Mario's blood rage might be the thing to bring these two