It's got a lot of things against it, not to mention the title and the attitude of the owners. They seem to want their mess cleaned up, and you should pay them for it too. Somebody chucked something big through that windshield. You can pretty well guess what the inside looks like judging by the outside condition. The fact that they didn't take any pics of the inside says it's pretty bad.
Still, for the money and if a person had enough elbow grease. If you didn't mind dealing with the numerous bad electrical connections from weather damage. There's a reason why these people didn't use this bus as intended.