For anyone who was interested, the open brain is not for sale. It belongs to my mom, but since my tank used to have no nitrates at all, and hers runs closer to 15 or 20 ppm, the brain didn't do as well in her system. Well, now it's going back to her for the time being due to the circumstances. If it becomes available, the first person who asked about it will have a shot at it, but she paid $60 for it, so I can't see her letting it go for much (if any) less than that.