A non-functional bed made solely for bondage purposes? ...probably not, but I would buy a bed that you could actually sleep comfortably on at night that happened to have, say, a cage under it and massive amounts of places to attach restraints.
Not a bed, but a bed kit! I'd love to get one of those, so the restraints are always available and ready to use without any setup! I can't tell you how much of a mood killer it can be when I have to get all the toys out and slowly apply them.