I don't see the problem, if the e-books are too high the library shouldn't buy them. Buy the dead tree version. I mean this is like a no-brainer. I like e-books, but I don't want my taxes financing the greed of these e-book publishers.
But I've always felt the library is for and about books, not CD's, not DVD's, not video tapes...you get the idea. Books and reading pure and simple.