i think it looks like a reasonable price for what it is, i wouldnt be worried about getting a lemon. we have all see gtr's that are horribly over priced for the age and condition they are in. its a 23 year old sports car, it will have had a very tough life. but im sure if you put a bit of love, $$, and time into it, it will scrub up very nicely!!
have a real good look over it, and do it with your head, NOT your heart.