US Department of Justice filings in the e-book price-fixing case against Apple reveal an exchange between former Apple CEO Steve Jobs and News Corporation/HarperCollins' James Murdoch, notes AllThingsD. In the course of a Jobs-penned email, which dates back to January 2010, the CEO explains why Apple is proposing to tie e-book prices to hardcover ones. "We simply don't think the e-book market can be successful with pricing higher than $12.99 or $14.99," Jobs writes.