[input_sh]

Not that I've ever encountered it in the wild, but I feel like pointing out that publishers can opt-out of DRM on Amazon as well. You'd recognise them by this in the description:

> At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.

I only know about it because of Cory Doctorow, never seen anyone else that does this. Heck, even re-packaged public domain books contain DRM for some inexplicable reason.

[goosedragons]

Kobo also does it. They tell you in the eBook details. It's the publisher's request. Publishers like Tor, O'reily and Baen go DRM free. If the re-packaged public domain books don't request it then on goes the DRM.