That argument doesn't work nearly as well for people who live outside the US. The 1 cent price doesn't take into account the $12.49 international shipping costs

That argument doesn't work nearly as well for people who live outside the US. The 1 cent price doesn't take into account the $12.49 international shipping costs (as well as the up to six week wait for delivery) I have to deal with if I buy used books via Amazon. Also, I almost exclusively read foreign books and I love being able to tap a foreign word and immediately get the translation. That would be worth a lot to me even if ebooks weren't cheaper and delivered to me a million times faster.