I know a lot of people are particular about the format of their books.  Maybe they’ll read a new release as an ebook, but then when the paperback comes out, they’ll add it to their collection.  Sometimes a book will get a cover redesign halfway through (Anna and the French Kiss, I’m looking at you) and a fan of the series will rebuy the the books they already own so that the covers match for the whole series.  Personally, I’ve never really cared.  Sure, I’ll gaze longingly at a beautiful redesign, but will I buy it?  Probably not.  I usually go for whatever edition of the book has the lowest cost.  Ebook, paperback, hardcover, it doesn’t really matter to me.  All I care about are the words.

The short answer: I’m cheap. 😉