Which innovative book retail pricing model, launched in 2007, initially faced strong opposition from major publishers due to its potential impact on hardcover book values?

The publishing and bookselling industry has undergone massive transformations in the digital age. From traditional brick-and-mortar bookstores to e-readers, audiobook platforms, and innovative subscription services, how companies sell literature has evolved dramatically. This trivia poll tests your knowledge about a significant pricing innovation that disrupted traditional book retail models and changed how readers access literature.

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Amazon Kindle's flat-rate $9.99 e-book pricing
Barnes & Noble's membership discount program
Audible's monthly audiobook credit system
Book-of-the-Month Club's subscription box model