To celebrate the one year anniversary of "PMD Applied" we're trimming the price to $20. A paltry twenty bucks! Order today and your copy will be lovingly hand picked and packed by our team of trained Java static analysis book packagers and rushed to your door. Then you can bask in the knowledge that you've got a fine reference manual on PMD, and also that you've triggered a shout of glee from yours truly.
More info on "PMD Applied" is at the book's site or you can just skip merrily ahead to the book's order page. Click here! And so forth.