Better to sell a late model on your own. I once did it by putting a sign in it and letting it sit in an upscale parking area, but nowadays you apparently get crank calls and people just trying to drive it for fun.
Listing it in www.autobytel.com or www.cars.com usually works well.
The appeal of the d as a commuter car should sell it soon enough. Patience is a virtue. I wouldn't get low-balled on the price either.
As far as how many are available, one way to tell is e-Bay, and not many are listed, so its difficult to tell. Dealers may have people trading them in who don't like the harsher ride or just aren't "diesel people."
Just my $.02.
Rose Castorini: I just want you to know no matter what you do, you're gonna die, just like everybody else.
Cosmo Castorini: Thank you, Rose. - Moonstruck