Which ancient civilization first implemented a standardized retail pricing system with fixed prices marked on goods rather than traditional haggling?

Before modern shopping malls and e-commerce, ancient civilizations developed sophisticated retail operations and marketplaces that laid the foundation for today's commercial world. The agoras of Greece, forums of Rome, and bazaars of Mesopotamia were hubs of innovation in retail operations, with specialized areas for different goods and services. Test your knowledge about these ancient retail innovations that shaped commerce for millennia to come!

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Ancient Rome, with the Diocletian's Price Edict of 301 CE
Ancient Egypt, under Pharaoh Thutmose III's market reforms
Han Dynasty China, through Emperor Wu's commercial standardization
Phoenician merchants, with their Mediterranean trade network