It's a sad fact of life but $500,000 doesn't buy much these days. It might just about get you a good time at Comdex. It may even buy you an even better time in Vegas while you're there. But if you're after one of the hottest domain names on the Web, it will barely pay for the deposit. Kevin Sinclair, who currently owns computer.com, is looking it sell it to the highest bidder. And his asking price of half a million bucks -- cash -- is just for starters. He thinks it's worth a lot more and expects the price to go higher -- much higher. Network Solutions, the company responsible for domain name registrations, isn't usually keen on this kind of entrepreneurial exploitation. But Sinclair maintains that he's had the name since 1994 which makes it all perfectly above board in his book. Anyone with some spare cash lying around and interested in bidding for this Web prize should contact Gary Kremen (gkremen@aol.com). Funny enough, online auctions have made a bit of a splash this week. The regional newspaper group Newsquest said it was setting up a Web-based auction in the UK. And a bunch of kind-heated celebrities including Mel Gibson and Brooke Shields agreed to auction their Y-fronts, boxers, knickers and G-strings on-line all in the name of charity.®