vdir.biz - how much do you think it will cost??

I owned vdir.biz and thinking on auctioning it on godaddy. vdir itself stands for Virtual Directory and .biz at the back suits the name for business. The domains actually suits most at the wholesale business directory, like Yahoo, have anything inside for sale, car, house, jobs and more. I have no idea how much this domain will cost, what's your opinion ?? honest opinion please, no crap .