Nope to both... Charisma and Bartering are character-only.
It used to in early Beta tell exactly how much you saved due to Bartering. I wonder why they removed it, I've wanted it back ever since
Same here. I really don't understand why they removed the "You saved XXX thanks to Bartering" (or whatever it was) message. It was continuous reinforcement that my invested points were doing something useful.
