For that money, I'd insist on a stock exhaust system. Or, a drop in price to compensate for the cheap exhaust changeover.
I cant imagine the bearings could have good bad, unless it is a flood bike restoration.
It would be a good idea to renew the head bearing grease, though.
My biggest concern would be for the clutch. If the bike jumps/lurches when going from the neutral to 1st, the clutch is dragging. If while standing still it is very difficult to select neutral from either 1st or 2nd, then the clutch is dragging. The clutch actuation mechanism can be a challenge to make operate precisely.
A dragging clutch, if uncorrected, leads to transmission and or shifter mechanism damage, which requires engine out of frame and the cases split.
As Bryan mentioned, the fork accordian gaitors are missing, and the seat cover is a cheap replacement. I'd certainly knock off asking price value for those items, as well as the exhaust. It looks as though the bike was restored with maximum profit as motivation. ...And, for an uninformed buyer.
I'll agree it is a very nice looking bike, but needs about $1500 in parts (add labor) to restore to the "original" condition asking price he is trying to get.
It depends on how bad you want it. And, if you are willing to work on the bike yourself. It will need tune-ups and other routine maintenance every 3000 miles. Remember, the condition of the bike will degrade as you use it. If that is worth paying for, then go for it.
Cheers,