Angry Robot Books was once an imprint of HarperCollins but is now an independent press.
They’ve just put out nine titles in eBook format available from several retailers.
From their FAQ:
What about DRM?
Books bought from this website are sold DRM-free. Books bought from other online retailers may vary – we do not ask for DRM to be imposed on any of our titles, though some stores add it by default.
The Kindle Editions, however, have DRM on them. This is because they wound up at Amazon via a distributor, instead of direct from the publisher.
Still, the prices are attractive and I’ve downloaded samples of seven of the nine (two of them will be released this Thursday) from the Kindle Store.
For guaranteed DRM-free ePub, buy direct from the Angry Robot Bookstore.