Yes you can by parts of the planes. A couple of years ago, they were selling parts of the ex-TWA Convair jetliners that they chopped up after no one expressed any interest in them as intact airplanes. Plenty of places to go to obtain used airliners and parts. As for intact airliners, your best deals may come from abroad. I think the guy refitting the 727 as a house in Washington bought his from Greece. Even with the cost of flying the airplane halfway around the world and transporting it from the local airport, he paid less than what he'd have paid for one out a US storage yard.
"When a man runs on railroads over half of his lifetime he is fit for nothing else-and at times he don't know that."