Which ancient civilization first introduced standardized product pricing tags to improve shopping efficiency in their marketplaces around 3000 BCE?

Before modern shopping malls and e-commerce, ancient civilizations developed sophisticated retail systems that shaped commerce for millennia. From the agoras of Greece to the forums of Rome and the bazaars of Mesopotamia, retail innovation helped build empires and connect distant cultures. This trivia explores a fascinating retail innovation that revolutionized ancient commerce and established practices we still see today.

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Sumerian merchants in Mesopotamia, who attached clay tablets with cuneiform pricing to goods
Egyptian traders, who used papyrus price scrolls attached to imported luxury goods
Indus Valley retailers, who stamped ceramic tokens with pricing symbols for marketplace exchanges
Chinese merchants of the Xia Dynasty, who used standardized bronze price markers on silk and jade