Which innovative pricing strategy did Amazon initially use for books that disrupted traditional bookstore models?

The book retail landscape has transformed dramatically over the decades. Major bookstore chains have risen and fallen, while innovative sales strategies and technologies have changed how readers discover and purchase literature. This poll tests your knowledge about a significant disruption in the literary retail space that changed how millions access books.

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Deep discounting bestsellers below cost as loss leaders
Premium pricing with free author signatures
Subscription-only access to new releases
Dynamic pricing based on individual reading history