Two comics tie-in bargains from assorted Random Penguin House imprints, discounted in the US-only (should be the same price at all the usual retailers):
@ $0.99 ($2.99 in Canada),
A Gentleman's Game by Greg Rucka, a novel based on his
Queen & Country spy series starring Tara Chace, originally out from Oni Press, IIRC.
@ $1.99 ($12 in Canada),
Supergods: What Masked Vigilantes, Miraculous Mutants, and a Sun God from Smallville Can Teach Us About Being Human by Grant Morrison, containing not only his meditations on the history and meaning of superheroes, but also apparently his own experiences writing them, if you're interested in more insight into what goes into his work.