Stupid capitalism... ;P
I picked up the comics shortly after the show started, and wait for the periodic compilations to catch up. I am fascinated with what Kirkman (to the extent that he has shaped things in the series) et al have done vs the comics: New characters (Daryl in particular), "Do-overs" (extending Shane's arc to the farm, Carol as bad-ass), what has remained the same (Rick and Michonne, to some extent), and twists on comic stories (Lizzy the psycho, the TV version of the Ben and Billy story- and well done IMO)
I did feel there was a conscious pull to bring the series more in line with the comic's overall arc, though Terminus is a bit of a twist on what they did in the comics, it would appear. I guess we'll see if "Safe Haven" is represented (and all the huge story arcs implied therein), if they head north towards DC at some point.