Which pricing strategy was pioneered by Macy's in the 1880s and has been proven to increase sales by making products seem less expensive than they actually are?

The way products are priced significantly impacts consumer psychology and purchasing decisions. Over the decades, retailers have developed sophisticated pricing strategies based on consumer behavior research. One particular pricing tactic has become nearly ubiquitous in retail, creating billions in additional revenue through psychological manipulation. Test your knowledge about this influential pricing strategy that changed retail forever.

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Charm pricing (prices ending in .99 or .95)
Bundle pricing (buy one get one free)
Dynamic pricing (fluctuating prices based on demand)
Loss leader pricing (selling items below cost to attract customers)