Miguel de Cervantes Saavedra's classic novel "Don Quijote de La Mancha" includes a notable introduction that discusses the book's marketability. The quote highlights the idea that the work is not just a literary piece but also a commodity that can be sold. This underscores the relationship between art and commerce, suggesting that literature carries value beyond its narrative.

The emphasis on setting a price at the start of the book signifies the importance of recognizing its worth. By doing so, Cervantes positions "Don Quijote" not only as a cultural artifact but also as a product within a commercial framework, reflecting the complexities of authorship and the publishing industry in his time.