For the two startups I worked for recently (one of them funded by Sequoia), the feel is that the CEO and/or managers want us to buy ZERO books.
When I first got hired, the CEO knew I didn't know PHP at that time (I knew C, Java, Python, and Ruby), and I asked him what might be good books to read up on PHP when I first started, and he mentioned, "what is it... [pause for a few seconds] it is http://www.php.net" At the same time, when he tried to persuade people to join our company, on the phone, he will say, "We are funded by Sequoia; we are given unlimited amount of money to succeed." But none of the developers I knew at the company buy any book and/or expense it to the company. So I bought close to 20 books that year, on PHP, CSS, Javascript, Prototype.js, jQuery, all out of my own pocket.
At the same time, the CEO will talk about working long hours, having us work from Monday to Friday and come back on Sunday for a "strategy meeting", and give us free $5 food for lunch so that we can work at the desk for extra 45 minutes and not walk outside the building for sunshine, for fresh air, or for a little exercise (our wage was probably about $45 to $75 per hour), and give us free $7 dinners two days out of the week at 8pm, so we would all stay till 8pm and would feel embarrassed to "eat and leave" and so after eating, put in 30 to 45 minutes or more for the company.
And all that, with the other founder, the CTO addicted to the Transformer, and a plastic truck that can transform to a robot, and all the plastic shooting he likes even when we are fixing bugs to release in the next 2 hours, hiring college buddy as the database guy (and storing all the millions of users' passwords in plain text in the DB), the girlfriend as the senior program manager, the girlfriend's brother as head of tech support when he had no tech support experience, and so that they can all be the "royalties" and have an attitude and look down on us, with all that, the allowed money to buy books for us, was zero.