When was the first modern price tag introduced in retail stores?

Before the invention of this common retail technology, pricing was inconsistent and often negotiable in stores. The introduction of this innovation standardized pricing, eliminated haggling, and fundamentally changed the shopping experience worldwide. It represented one of the most significant shifts in retail history, transforming how merchants displayed products and how consumers interacted with goods. Can you identify when this revolutionary retail technology first appeared in stores?

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1861, by John Wanamaker in his Philadelphia department store
1903, by F.W. Woolworth in his five-and-dime stores
1879, by Frank Winfield Woolworth in his first successful store
1927, by King Camp Gillette to market his disposable razors