It is weird how Amazon works - 50% off from the publisher is within a dollar or two of the regular Kindle price. No DRM and multiple formats is a huge improvem

It is weird how Amazon works - 50% off from the publisher is within a dollar or two of the regular Kindle price. No DRM and multiple formats is a huge improvement, but if you have a lot of Kindle books already, being able to manage everything through the Kindle system is also a benefit. (For fiction or single-read, I would still probably go with Amazon. For a tech book which I'd want to keep reading and potentially view on platforms which don't have Kindle and where defeating the DRM could be a challenge, publisher direct.)