I'd look around more
Half and half is too good a deal for him, unless it is so darn close you don't mind. Firewood is essentially free, it is your labor and wear and tear on materials expense that makes it valuable.
There are BILLIONS of standing dead trees out there you can get for free or darn close to it, heck, you can get paid to clean them out and haul them away. I know I have gotten paid to do clearing, and I also had the tree service guys just come and drop off logs and branches, sometimes they just want someplace to dispose of wood. Or contact the city maintenance guys see where they are clearing, maybe you can get free there.
I'd look around for free for the cutting and hauling first, or offer some token five or ten bucks a cord if it is real close by and you think that makes it worthwhile. Half and half..no way, too much work to give away. Unless he helps with all the work, so he gets his wood and you get yours, and uses all his own gear and truck, or unless he is real elderly/invalid, etc and you are just being neighborly and you want to do it "just because".
Been a long time since I drove through PA, but what I remember is wall to wall mountains and *trees*, so there's got to be a better deal than that near you someplace.