How Supply and Demand Set Prices
A basic market explainer on why prices rise, fall, and settle where buyer interest meets seller willingness.
Opportunity cost is the value of the next-best thing you gave up when you chose something else. It is the hidden price inside every decision.
The core idea
$20 and a free evening.
The concert tonight.
The hidden price is the value of the next-best option you gave up, such as an extra work shift, a meal, or saving the money for something else.
Everyday examples
Spending $20 on lunch out means not using that same $20 to save or invest.
An hour scrolling is also an hour not spent resting, studying, or building a skill.
Four years in school can mean wages not earned now in exchange for larger opportunities later.
Why economists care
The real comparison is what this choice delivers versus what the best unchosen alternative could have delivered instead.
Three habits that help
Before you commit, ask what the strongest realistic alternative would have been.
A decision can be costly even when no money changes hands if it uses scarce time or attention.
You do not need to compare every option on earth. The key is the best one you actually passed up.
Keep exploring
A basic market explainer on why prices rise, fall, and settle where buyer interest meets seller willingness.
A quick guide to why prices rise over time, including demand pressure, production costs, and the role of expectations.
GDP is the standard scoreboard for the size of an economy. This piece explains what it includes and what it leaves out.
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