Which ancient civilization first introduced standardized pricing for goods in marketplaces, moving away from the traditional haggling system?

Before modern shopping malls and e-commerce, ancient civilizations developed sophisticated commercial systems that shaped today's retail practices. From Mesopotamian clay receipts to Roman advertising techniques, early merchants pioneered concepts we still use. This trivia challenges your knowledge about a revolutionary ancient retail innovation that transformed how products were sold and valued in early civilizations.

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Ancient Rome with the Edict of Diocletian in 301 CE that fixed maximum prices for over 1,000 products across the empire
Ancient Egypt where pharaohs established set prices for goods in royal marketplaces to prevent price gouging during Nile flooding seasons
Ancient China during the Han Dynasty when government officials posted official price lists at market entrances
Ancient Greece where the Agora of Athens implemented fixed pricing tablets for olive oil, wine, and textiles to simplify commerce