$5000-$5500 in average condition. I see them for less but would think that they are whipped. $7000 is too much right now. If it is clean and the seats aren't shot out, $6000 or a little more is reasonable. But it has to be clean for that price.
Had both an 84 and a 87, stay away from the 84's with the junk injection setup!!! My 87 was twice the car the 84 was. Oh and I sold my 84 for under a grand with no motor or trans, but it was a pile of shit!