Today (May 6, 2015) they are offering all eBooks and Videos at $10 each for the day.
Packt Publishing firmly believes that you should be able to read and interact with your content when you want, where you want, and how you want – to that end they have been advocates of DRM-free content since their very first eBook was published back in 2004.
“Our top priority at Packt has always been to meet the evolving needs of developers in the most practical way possible, while at the same time protecting the hard work of our authors. DRM-free content continues to be instrumental in making that happen, providing the flexibility and freedom that is essential for an efficient and enhanced learning experience. That’s why we’ve been DRM-free from the beginning – we’ll never put limits on the innovation of our users.”
– Dave Maclean, Managing Director at Packt Publishing
The continued success of Packt Publishing shows that business models that don't involve artificially limiting customers.
You can also learn more about the Internal Day Against DRM at https://www.defectivebydesign.org/.