Where do you buy DRM Free books from? (I assume that's a requirement for the device to be fully offline, right?) Do you run everything through that DRM-stripper Calibre plugin?
It's usually a small marketplace like Leanpub. Tilted Windmill Press (Michael W Lucas) [0] is another one I've done a good bit of purchasing from in the last six months or so.
Some of the books on the Kobo store are also sold with DRM. They only mention it in small print under eBook Details at the bottom of the page, e.g. Download options: EPUB 3 (Adobe DRM)
