I just reviewed his new book, A History of Western Philosophy and Theology, and a friend of mine at Grace Books (Carlisle, PA) let me know that they have a special going where you can get it for $32 shipped. You won’t beat this deal. Amazon, by comparison, has it at $45.98. I’m no mathematician, but my computer tells me that’s more.
(While you’re at Grace Books check out Hymns Modern and Ancient for $14.95, put together by my college choir director and his wife, who was our pianist.)