Which innovative pricing strategy first gained widespread popularity among American retailers during the Great Depression as a response to decreased consumer spending power?

During the Great Depression (1929-1939), retailers had to dramatically rethink their pricing strategies to survive. This period saw the emergence of several innovative approaches that would permanently change how products were priced and marketed in America. Some strategies that emerged during this difficult economic time continue to influence modern retail pricing philosophy. Test your knowledge about this pivotal moment in retail history that shaped consumer expectations for decades to come.

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Loss leader pricing (selling select items below cost to drive store traffic)
Dynamic pricing (algorithmically adjusting prices based on demand)
Premium pricing (positioning products as luxury to justify higher prices)
Subscription-based pricing (charging recurring fees for regular product delivery)