I still loathe what Amazon did to their comic app, but FWIW:
Rorschach 1-12 by King and Jorge Fornes is $4.99
Strange Adventures 1-12 by King, Mitch Gerads, and Evan Shaner is $5.99
Supergirl: Woman of Tomorrow 1-8 by King and Bilquis Evely is $2.99
(And since I'm mentioning a Watchmen property, Alan Moore's new book Illuminations is 70% off)