... interpret incorrectly the sole purpose of a price guide/auction catalog is a guarantee as to what a future level any chip (item) will trade/sell at; though the reader should be aware of all that such guide is providing is a history as to how such chip (item) performed... a compilation via various sources and, in many cases, a comparison approached is used if no case histories are available. Factors as to known quantities; finds, destruction records and so on are taken into account as well... and it's simply just not a matter of pulling numbers out of thin air and guessing what any value should be out of benefit, but rather a history... and in most cases a recorded/documented history. Any guide along with the knowledge of the market go well together.

One further note if I may; I hope you never come to meet a day thinking that "Cash is 'KING' and it talks."