In which historical period was the world's first standardized 'price tag' system with fixed, non-negotiable prices widely implemented in retail?

Before modern retail and fixed price tags, merchants around the world employed fascinating pricing strategies that shaped economies and trade. This poll explores how historical pricing methods influenced commerce and how some ancient practices evolved into the pricing strategies we see today. Test your knowledge about how our ancestors determined the value of goods and negotiated transactions across different civilizations and time periods.

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Ancient Rome (1st century CE)
Medieval European markets (13th century)
Victorian England (mid-19th century)
Colonial America (early 18th century)