The Airstream Sport on E-bay is the one I just gave up on trade to Woodland Travel Center. It is immaculate and was stored indoors when not in use. I doubt it will go for less than 30k, since that's what they paid me for it. I can tell you that you would love it. Very nimble and maneuverable, and we had an extra deep-cycle battery added to the trailer for longer boon docking trips.
We decided it was time to buy a bigger Airstream, and went with the 30' Flying Cloud. The only complaint that I would have is that you can't access the bed from both sides, and I have to crawl over my wife at night to get to the restroom.
Congrats if you are able to get it!