You find an author you like and you read a book of theirs and love it, can't put the iPad down, you get done and just get a sample of another book by them and then you buy that one also.
Where does it end??? It is just to easy to buy books like this!!
I can't imagine why an author would not want his books to be sold electronically, I have dropped more money on books in the last few weeks than I have in the last ten years.