Comics enjoyed by my Old Lady: Chew, IKG, Saga, JTHM, Ex Machina, Gil Kane's Green Lantern, Wormwood, NYX, Jurgen and JMS's Thor, along with a few others.
To me, the higher-priced comics have always been justified for the same reasons mentioned above: higher quality paper and no ads interrupting the flow of the story. In fact, as most of the titles on my pull list are indies, whenever I do pick up a Marvel/DC book, I'm always startled when I'm suddenly confronted by an ad in the middle of the story. Higher price point aside, I'm spoiled by my usual stuff.
Because IDW stands for I do what i want.