Which ancient civilization invented the first known retail price standardization system with fixed pricing posted on goods rather than haggling?

Before modern e-commerce, ancient civilizations developed sophisticated trading networks and retail systems that influenced commerce for millennia. From the bustling markets of Mesopotamia to the complex trade routes of Rome, ancient retail innovations shaped how we buy and sell today. Test your knowledge about market trends and retail systems that emerged thousands of years ago and see how well you understand the foundations of today's commercial practices.

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Ancient Egypt, during the New Kingdom period (1550-1070 BCE)
Ancient Rome, under Emperor Diocletian's Edict on Maximum Prices (301 CE)
Phoenicians, in their Mediterranean trading posts (900-600 BCE)
Han Dynasty China, during the reign of Emperor Wu (141-87 BCE)