Which ancient civilization developed the first standardized retail pricing system, where goods had fixed prices rather than being exclusively bartered or negotiated?

Long before modern e-commerce, ancient civilizations created sophisticated marketplaces that revolutionized trade and commerce. These early retail innovations established principles that still influence how we buy and sell today. Test your knowledge about the product development and retail innovations that shaped ancient commerce and laid the groundwork for modern business practices.

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Mesopotamians, who developed the shekel weight system for standardized pricing around 3000 BCE
Romans, who established the 'Edict on Maximum Prices' under Emperor Diocletian in 301 CE
Egyptians, who used standardized grain measures as fixed price equivalents in 2500 BCE
Chinese Han Dynasty merchants, who implemented government-regulated price lists in 100 BCE