Lisa, I thought of that, but that answer is too easy. I don't buy just hardcover fiction. Actually i never buy hardcover fiction. I buy mostly trade paperbacks for my non-fiction and used books for my fiction. I NEVER buy new fiction and never ever new hardcovers. Since I read a fiction book in two days I can't afford that kind of expense...so i haunt the goodwills and used stores for my stories. Like i said, i eat books.
Oh, and I get used magazines from friends and family and pick up the occasional new one at the airport. So that's not new books either.
I let myself buy new non-fiction trade paperbacks for things I am studying, like Yoga, or work-related books.
So i am thinking in terms of my own situation. Mainly for fun: if I buy the Kindle, it won't be about the money anyway, it will be about saving trees, less clutter in my home, and less weight to lug around everywhere i go.
So, just for fun, for me to figure out when i would break even...let me look at my purchases on Amazon. Be right back!