site to estimate price of used Audi

[Ice Cat ^. .^ ~]

I need to get something off the internet to estimate the price of our old
88 Audi 5000 S and my 89 Audi 200 Turbo.
Any web sites I can plug the details into and the a reasonable price???
Not an inflated one. I went to CtNow.com and they gave
$2,860 for the 88 in fair condition and $5,200 for the 200 which I
think is too high.  Thanks

   "If the police arrest a mime, do they tell him he has the right to
remain silent?"  ~ Geoge Carlin