New ask Hacker News story: Ask HN: You've got $300 to fill an empty library. What do you choose?

Ask HN: You've got $300 to fill an empty library. What do you choose?
6 by samcgraw | 9 comments on Hacker News.
I'm looking to put together a modest home library and am particularly interested in the classics. I've budgeted $300 for the task. What would you deem a 'must-have'?