I bought a 1994 Land Yacht back in 2003 and loved the interior layout, cabinetry, and storage. All I will say is: get it checked out completely by a qualified independent RV inspector and chassis mechanic.
Others may have a different opinion but the unit I had was not deserving of the Airstream name. The later models may have been better.
At only 17k miles it should be in good shape, especially if it was garaged. They may have only used it for tailgating or instate camping. We could camp once a month at one of our favorite state parks and only put 500 miles on a motorhome.
Good luck
Tom Wilds
Blythewood, SC
2016 Newmar Baystar Sport 3004
2015 Jeep Wrangler 2dr HT