Has there ever been a time when you wanted very much to read a book, but the price tag was just a little too high to go out and buy it? That happens to me, well, practically all the time. So what's the solution? Go to the library. :D
I absolutely love public libraries. They usually have a shelf of books for sale at cheap prices, a wide variety of classics, a decent selection of Christian books, and sometimes even free stuff.
But what if they don't have the book you want? That also happens to me a lot. A conservative Christian homeschooler writes a book - a really good book - but somehow it doesn't rate so high on the general public's list of great books, so our library doesn't get it. No problem. Interlibrary loan it! Your local public library will more than likely be happy to interlibrary loan books for you from any other library in the country, even if that means college and seminary libraries. Very rarely have they actually been unable to find a book.
So now I get to read all the good books I want, without spending a dime. And of course, if I REALLY like a book I can go ahead and buy it. At that point Amazon comes in handy.