the rear bumper in the background is not a good sign mate. with the damage im being told its got, sounds like its been in a rear end shunt.
i can only tell you what i have been told, but there must be a reason its been floating about on ebay for quite a few weeks now.
its your choice what you do now, now you have some direct questions to ask him it may be worth giving him a call and directing some very blunt questions his way
that said, i wouldn't bother, email him, tell him you have been told its not as described and walk away with 1k in your pocket mate. as said before there are some very good coupes on here.
What ever you get for 1k is going to need some attention so don't be under any illusion about that, but with the stuff on here at least you stand a fair chance of all the known faults being disclosed.
elmof1 has a porto on here thats as honest as they come. the only reason he is selling is he has just got a LE. its over your budget of 1k, but its only a few 100 over.
you can see the blatant color difference on this photo, just look at the rear quarter panel