I can anser number 3 for you.

"3. Still in the 19th edition (this is the only edition that I have), it is mentioned that "the growth of the internet, and specifically eBay and chip dealers websites, has enables us to provide far more accurate values than in the past." What is the other sources for obtaining chips' prices? How did the Chip Rack's authors do before the rising of the internet? "

Have have know Jay Sands for almost 20 years. In the early days Jay would walk around at shows with a binder the size of a NY Yellow pages keeping track of chip prices.

Barry