If those are the real deal as far as being Challenger door handles, then $75 is a good deal if the chrome is decent. The repro's you see are the Cuda door handles. They fit a Challenger, but they are straight, where the Challenger handle has a slight bend to it where it fits up against the door.
That steering wheel isn't all that rare or scarce on E-Bay. The woodgrain looks good, but might have a crack near the top? I would like to see a pic of the wheel standing up a little more to see what kind of shape the black padding is in. There is a fine gray/silver line that runs around the outside of it. It looks like your's might have worn away from that one pic.
At this point, I would say it's worth anywhere from $40-70, depending on the pad.
Just my opinion.
Mike