Which statistical method does "The Coin Dealer Newsletter" use when determining which certified coins to raise prices on and which to lower prices on? There is this useful article on Wikipedia: http://en.wikipedia.org/wiki/Statistics If the Greysheets and Bluesheet truly represented all available data, we should see many more changes from week to week. As a subscriber it bothers me that their intellectual rigor is not greater. What would be necessary for their computer and statistical systems to be truly up to date on certified coins?
Apparently you don't understand how the Grey Sheet works. read post #53 in this thread - http://www.cointalk.com/t205374/