$5 All Piper Books; Today Only
Probably the best deal I have ever seen to stock up your library, your gift giving stash, or any other use you might have for a John Piper or DesiringGod-related book is going on right now: $5 for any book; no limit. But currently it looks like the deal has pretty much rendered DesiringGod's servers effectively dead, so you can place your order by calling, 1-888-346-4700. Deal ends Thursday, June 28, 2007 at midnight (central time I presume).
Thank you, DesiringGod!