But I'm declaring amnesty; you may buy them now, without fear of reprisal for your lateness. You may buy copies for other people, as gifts. Or for hitting them with.
Aside from the usual selling points (engaging content, clear prose, charming author), I will mention that my LWP book says catty things about Liza Minelli, and the RTF book says how to make an origami CD case. You buy now! You buy!