Which retailer first conducted extensive research on 'charm pricing' (prices ending in 9) and found it increased sales by nearly 24% compared to round number pricing?

Pricing strategies in retail often leverage mathematical psychology to influence consumer behavior. One famous example is the charm pricing strategy, where prices end in 9 (like $9.99 instead of $10.00). This poll explores how retailers have scientifically tested and implemented mathematical pricing psychology to boost their bottom line. Test your knowledge about this fascinating intersection of mathematics, psychology, and retail strategy!

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MIT and University of Chicago researchers in collaboration with JCPenney
Amazon's early pricing algorithm development team
Walmart's statistical analysis department in the 1980s
Apple's retail strategy group under Steve Jobs