@ehyde@federatedfandom.net yeah, direct from the author of publisher in many cases, deDRM in Calibre otherwise (Adobe DRM and Kobo have been the easiest for me to strip - B&N and Amazon have been mixed).
I usually buy from ebooks.com if it's not direct from a publisher - they use Adobe DRM if it's not DRM-free and at least I'm not lining Jeff Bezos's pockets more.