So for the gripes regarding PS's cost... So PS itself has always been a very expensive program. I believe when I was in college, it cost $500? for the creative suite (CS2). I don't remember exactly and I do remember getting a student discount for it.
The subscription model with Photoshop is actually better in a way. In the past, you would have to pay that full amount to upgrade your Creative Suite to the newest version. Now Creative Cloud does a massive update every year AND smaller updates throughout the year that you automatically get with the subscription. So your program will always be up to date. Another huge perk is the TypeKit. Now as comic artists there really isn't much of a use for it, but at my day job I do use it occasionally and it has definitely saved money from having to buy fonts which can get very expensive.
Of course there is also the bonus that Photoshop works well with Illustrator and inDesign and these three programs combined are pretty unstoppable for print designers.
All that said, at home I use CS6 because I'm cheap and already have way too many things I pay monthly for. But it is definitely worth the price for those who need it. I just don't think most comic artists need it since CSP does everything you can dream of for creating a comic.
Except type. I really, really hope they fix the type tool someday!
I don't know if I could give up PS completely though. I've been using it since high school before the creative suite even existed. .-.
Also, I have heard that you can talk to Adobe support to get a discount on the price. I don't know if that's still true, but worth a shot for those who would like to try it.