And from a common sense standpoint, if Amazon were really charging the crazy markup this guy claims, then some other company would mark up a mere 1000% or whatever and massively undercut Amazon's offering. Given that this hasn't happened, it is pretty safe to assume that the true costs are much higher than his math suggests. Either that or other companies have just ceded massive eBook profits to Amazon out of the goodness of their hearts. I'm going to guess it's the former.