Good luck with it, Toby. My experience is, if you get a good deal on the purchase, they'll whack you on the trade-in. I've never traded in a car when buying a new one. Always sold it privately afterwards.
My ex-wife was a pissah--she'd go in and get a great deal, then bite like a bluefish at all of the crap they try to sell you when you meet the sales manager---rustproofing/extended warranties/alarms and the like, the things you can ALWAYS get cheaper aftermarket
