I agree it would be worth a lot but not sure if it's actually as high as you're thinking. Sure it was a heck of a sale for a domain name but when I look at the website I wonder if the purchase actually panned out. Other than visiting the website out of curiosity I have never heard of business.com doing anything newsworthy since the purchase of the domain. In fact it looks a bit like a generic hold site to me, it makes me wonder what their actual revenue is given it is such a great domain.