Is a 2003 Grand Marquis wit 97000 miles worth
NO. Look up its blue book value; edmunds.com (click car appraiser under used cars), kelleybluebook.com, nadaguides.com. Don't get me wrong, it's a solid car and 97K is good mileage for that age, just not worth 9K, even dealer retail is only 3K.
Not even half that. Check out kbb.com