This is an under-appreciated strength of ebooks: they can't be resold.

With print books, publishers risk undermining their own inventory. The more print books they sell, the more they fuel the used market, which drives down prices. This is countervailing force to the typical upward price pressure of high demand.

Not so with ebooks. Plus you don't have to cut down trees, stamp them with poisonous dyes, and move them around with oil-sucking cargo ships, frieghtliners, forklifts and such.

If only ebooks didn't suck so bad...