I'm pretty sure that the 90 LS's blue book value is 5400 if it is in either the best or second best condition from www.KBB.com. I got my 90LS for 5000 off of a small car dealership. Mine was generally in reall good condition for a 90, except for the hood, it had a million chips in it. I think it was prob worth less than 5400 because of the hood, but thats why I talked him down to 5000 from 5400.