It looks like prices were incorrectly identified in this article:

Alaska Airlines Board Room (Include up to two guests)
 - $450 for new general member ($350 for renewal)
 - $375 for new MVP member ($325 for renewal)
 - $295 for new Gold/Gold 75k member ($295 for renewal)

Delta Airlines Sky Club (Unable to find if an elite discount exists) 
 - $450 (Up to two guests at $29/each)
 - $695 (Up to two guests included)

With these true numbers from each airlines website it tells a vastly different story.