Which ancient civilization first implemented a standardized pricing system with fixed prices marked on products, moving away from the traditional bargaining model for retail goods?

The ancient world had sophisticated commercial systems long before modern retail. From the grand bazaars of Mesopotamia to the trading networks of Rome, ancient civilizations developed complex product distribution, pricing strategies, and customer experiences that laid the foundations for modern commerce. This trivia question explores how one prominent ancient civilization innovated in their retail approach and created lasting commercial systems.

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Ancient Egypt, where pharaohs decreed standard prices for essential goods to maintain social order
Ancient Rome, where the Edict on Maximum Prices established fixed pricing throughout the empire
Ancient Greece, where the agora merchants developed price tags to speed up transactions
Ancient China, where Han Dynasty officials standardized prices to simplify tax collection