Piper, graciously as always, has made the book freely available on his website in PDF format. For all of those who haven’t read the book yet, there is now no excuse!

While you’re there, you might note that there are many other free books from Desiring God. This what Piper says about giving books away:

Should ministries offer their online media for free?

Yes, I would try to persuade ministries to do what we do at Desiring God. And what we do is say that if you can hold an item in your hand, we’re going to sell it. And we’ll try to sell it at a margin that is as low as possible, so that our ministry can be kept solvent. (You can hold a CD in your hand. Same with a shirt.)

But if you can’t hold it in your hand—if it’s electronic—we give it away. So if you can download it from the internet, then we give it to you. That’s the way we’ve tried to draw the line, instead of requiring people to pay a dollar for each download, or whatever.

As the unofficial motto of Desiring God has it: “Freely you have received, freely give.” (Matthew 10:8, Acts 20:35)

Grace from first to last.