Which innovative pricing strategy, introduced in 1935, revolutionized the book industry by making literature more accessible and is credited with helping create a generation of readers?

In the publishing world, pricing strategies can make or break a book's success. Publishers must balance accessibility with profitability, while authors seek fair compensation for their creative work. This trivia question explores a revolutionary pricing approach that changed the literary landscape and made books more accessible to the masses in the early 20th century.

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Penguin Paperbacks' uniform price of sixpence (the cost of a pack of cigarettes)
Book-of-the-Month Club's subscription model with discounted bestsellers
Doubleday's 'pay-what-you-wish' honor system for classic literature
Random House's installment payment plan for encyclopedias and reference books