Hm. I had to google what durbanite means, so that's not a good sign to start with. It seems like you have to find a buyer from the city of Durban, no one else is gonna buy this. I guess with Frenzu.com you are aiming at frenzi? Correct me if I'm wrong. Domains with 'u' at the end usually don't sell that well (my experience). You can try to brand it but I doubt that Brandbucket will accept it. All in all, it will be very hard to sell these, no matter at which price. Hope this helps.