Which pricing innovation, first widely implemented by Philadelphia retailer John Wanamaker in the 1870s, revolutionized retail by moving away from the traditional haggling model?

The history of retail pricing strategies has evolved dramatically over centuries. From fixed pricing to dynamic algorithms, the way merchants determine product value reflects economic conditions, technological capabilities, and consumer psychology. This trivia question explores a pivotal innovation that fundamentally changed how retail stores operate and set their prices in the late 19th century.

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Price tags with fixed, non-negotiable prices (the 'one-price policy')
Dynamic pricing based on inventory levels
Subscription-based retail membership pricing
Loss leader pricing strategy for staple goods