I don't disagree with you, but as I understood it the author is partly dismayed by the fact that the delivery fee is so large. Even if every copy were delivered via 3G (which is unlikely), $2.58 for an 18 MB file seems steep. Sure, on one level it's not his place to complain -- he still probably made a boatload by leveraging Amazon's massive sales platform -- but I also understand that pricing schemes like that can feel like a bit of a rip-off (e.g. $20 printers with $40 ink cartridges).