With no slides it's a white elephant. No one is going to want it, especially for $250K. OMG.
There are LOTS of great buys on older diesels before slides were common. And they are REALLY cheap. Prevost, Bluebird, there are tons of them out there - the world is your oyster. lol
Our second RV didn't have slides. It only lasted about a year. Every time we went out we'd say, "I wish we had slides!" It got traded in.
All of the new luxo rv's have slides on both sides now. The cramped quarters feeling is no longer there.