THAT metric is used to indicate the asking price value for the chosen hardware prior to purchase. Helps decide vs buying other hardware offerings.

It only applies to those curently offered hardware prices.

To those expressing gratitude.  Thank you and your welcome.  However these sheets have been compiled by me yet I am not the original author.

Two other bitcointalk community members in the past shared their respected documents. I only put them together and kept them up to date along with adding requests over time.

Please feel free to share any important calculations that may be missed.