Examples
- A candy that only one kid has
- A toy that only a few kids own
- A special drawing used for a school project
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See also
- Why Are Some Things Always Expensive?
- Why Do Prices Go Up When You're Short on Time?
- Why Do Prices Change When You're Not Looking?
- Why Do Prices Suddenly Drop — And Then Jump Back Up?
- Why Do Inflation Rates Rise During Recessions?