I got a sony cd player that has the iPod jack in and all that good stuff.
Its a sony CDX GT820IP
Heres the link
http://www.crutchfield.com/S-5Uh7Ugz69JU/p_158GT820IP/Sony-CDX-GT820IP.html
From what i remember, once you plug the iPod into the cd player you cant control your music off the iPod, you have to use the cd player. I only ever plugged my friends in so im not 100% sure on it. The cd player is in basically new condition too, its not beat up.
I think $75 would be fair for it