There is no budget for books at my house or at my company. Now this may be a confusing statement to read so here is what I mean: "There is no budget for books" does not mean that we have not allocated money for books. It means that as long as you are reading the books you can buy whatever the hell you want, whenever you want. There is no budget or no restriction on how much you can spend on books.
Are you interested in Roman Architecture? Amazon has a "buy now" button, go use it. Did you see a classic that you've always wanted to read at Barnes and Nobel? Here's my card, go buy it. Did you notice the second hand store had a bunch of good deals... here's a brick of 20s.
I buy extra copies of Zorba the Greek just to give away. Seriously, you can never have enough copies of Zorba the Greek hanging around. Want a copy dear reader? Shoot me an email. jp@the domain of my business in the link earlier in this article. I've had to start custom designing bookcases for the house even though we are constantly giving books away.
Why is this? Why is there no budget for books? Well the total cost during my "bad" years where I'm really click happy is like ~$1000 a year (We use libraries too. I'm not crazy)... what has the return on a $20,000 to ~$40,000 lifetime investment been? I can't even calculate. The stuff I have learned in those books has made me sooooooo much money over the years. Gotta be hundreds of thousands if not millions. It has to be the best investment you can ever make.