In that market, you don’t barter for individual goods. Instead you exchange your goods or services for a common medium of exchange—that is, money. You can then use that money to buy what you need from ...
Purchasing power is the value of a currency in real terms—based on the goods and services each unit can be exchanged for. Remember when you could buy two Mcdonald's Big Macs with a $5 bill in 2000?
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