This is really good.

Amazon.com is now discounting Ron's book to $18.47 and shipping is free if you buy other stuff and the order is over $25.

They are also now selling online versions of some books, and Ron's is one of them, for $5 and change over the price of the printed version. Even if you don't buy the book, you can now search the entire text of the book right on their web site.

Amazing stuff.