It may have changed, but last time I looked, only some Kobo books are actually DRM free. For the others, if you have a Kobo device, you can download them onto

It may have changed, but last time I looked, only some Kobo books are actually DRM free. For the others, if you have a Kobo device, you can download them onto your device and then use a Calibre plugin to extract them as a regular epub. I presume there's a way to do the same with the desktop client, but haven't used it myself. On the whole I've been far more satisfied with Kobo than Amazon, though if the DRM situation ever becomes more onerous I'll stop buying from them. The devices themselves are excellent and pretty easy to tinker with.