Originally Posted by Katsunami
Still, I need to convert KF8 to epub before I can do anything with it in Sigil, or EpubMetaDataEditor,and I don't want that. I only buy books in my chosen base format, except when there is no other choice.
Fair enough. I buy from wherever's best for a particular book - eg from Kobo or BoB when they have a good sale on. Conversion is so very easy that it's not something I give a second thought to. Calibre just does it.