This is a prime example of how people are willing to pay for convenience. Ars Technica has posted a 19-page review of Apple’s OS X Lion which is still available fro free at their website in an on-screen html format. You can read it there or download an eBook version for $5.
Apparently, 3,000 people decided to pay for the eBook version in the first 24 hours that is was made available. Ars made it available as something of an experiment as was “pleasantly surprised” with the “free money” they generated from making the review available on Amazon.
Who needs more proof that people will pay good money for good content? Wow.