Here's some estimates based mostly on OS, not site. http://www.forbes.com/sites/andygreenberg/2012/03/23/shopping-for-zero-days-an-price-list-for-hackers-secret

Here's some estimates based mostly on OS, not site. http://www.forbes.com/sites/andygreenberg/2012/03/23/shopping-for-zero-days-an-price-list-for-hackers-secret-software-exploits/ http://www.forbes.com/sites/andygreenberg/2012/03/23/shoppin...