12 week old male Great Dane puppy

We must rehome our 12 week old male puppy at no-fault of their own. He's a pure bread Dane. I've images of father and mother. He is perfectly up to date on shots and healthy. Rehoming fee of $800 includes xxl cage with divider causing all of his stuff. He knows sit, stay and lay out. He's crate trained but nevertheless a puppy and should not be in the crate for longer than 6 hours. He could be free of diapers and should be on the door when he must step out.