I found this slightly humorous as I own Rubiks.org
However, I don't see too much marketability for this domain -- I would have to give it a 4/10 on the quality, but as with my opinion -- everything is subjective. You could potentially find that end-user that will be willing to drop XXX,XXXX on the domain.
However, realistically I could see mid XX, low XXX being an option here.
Where do you see yourself marketing this domain -- and where would be some end users that you would wish to target?