OBVIOUSLY the whole point is to read it online, for free. But if you absolutely, positively MUST buy a copy, 1. Thanks, and 2. here’s a lobste.rs-specific coupon code to get it for ten bucks off: “lobste.rs” (no quotes). But please, do not feel obligated to buy a copy. read it online, read the original blog posts, and if you feel you have to do something nice, write your own blog post about how helpful combinators are.
Thanks for doing this! I think its really awesome when authors also put their content out there like this. I did buy a copy as well, but not because I felt obligated – the ease of reading in epub format on my iPad is well worth the money. Thanks again!