I'd be surprised with all of the issues they could hang on someone trading it, if they've got more than $1,500 tied up in it... Stand firm if you're interested...
If you get the ABS kicking in, you could have a dirty ABS sensor, or a failing one. Front hub will be about $150 for a good new one if you do it yourself.
The fuel return line you can see from the wheel well sometimes, you'll see a darker color, i.e. weeping if it's been compromised. Those are $100 from 1A Auto, Tony is a vendor here.
Door handle will run you about $20 plus a can of DulpliColor.
New Rear Wiper is about $25 from Rock Auto, as I just ordered one for my truck.
A/C sounds good, the rear air is just a tube to a second fan that re-pushes the air to the rear seat, but it's good that the fan works.
Since they're probably original, shocks will be about $150 for a set of Monroe Reflex Shocks for all 4 through Rock Auto if you put them on yourself. Bad Ex shocks typically feel ok, but once off you can push them down with one finger, and new ones are night and day.
Just some hints and values...