[unhammer]

That's a good list. I've found some stuff I was looking for at Bloomsbury. Tor is probably good if you're into sci-fi/fantasy. But if you're looking for a specific book in English it's typically very hard to find a place to pay for a DRM-free e-book.

A search engine that covers all the little sites selling DRM-free books would be nice!

(Publishers of Norwegian books fortunately tend to have just do watermarks, which is fine – you can read the book on whatever device you want, and your copy has a little note saying "ex libris Your Name" or something)

[sohkamyung]

Kobo [1] and Google Play Books [2] also sells some books DRM free. You have to check the book details to see if it says 'DRM free'.

[1] https://www.kobo.com/ [2] https://play.google.com/store/books