update

The author of an alleged vulnerability in Microsoft's Excel software remains committed to bringing the flaw into the public eye, despite the best attempts of Microsoft and eBay to prevent it, vnunet has learned today.

An eBay user known only as 'Fearwall' had posted an auction offering an as yet undisclosed flaw in Excel, known in the security community as a zero-day vulnerability, with the intention of selling a detailed description of the bug to the highest bidder.

EBay pulled the auction because it constituted an item that promoted illegal activity. But at the time the sale ended it is reported to have topped the $60 mark.
I wonder just how much security 'fearwall' has on his PC NOW