Last night, Hachette dropped the price of JK Rowling's "A casual vacancy" from $17.99 to $14.99. Had they had great sales, they would not have dropped the price. However, the steep price of the book made people more critical of the content, and book only has 3 stars. Many reviewers voiced that they expected more for the price.
This proves that, as consumers, we do have the power to influence pricing.