I've been buying the Dresden files the first week that the hardback (and later the ebook) came out - starting around book 4.  Happy to spend the money to get the next volume as quickly as possible.   Three years later that is not going to happen.  I'll wait until the ebook hits paperback prices - however long that takes.  Maybe in another ten years if he has put several Dresden Files books out on a one a year schedule I'll go back to spending the extra money.