Net Promoter® NPS®, NPS Prism®, and the NPS-related emoticons are registered trademarks of Bain & Company, Inc., Satmetrix Systems, Inc., and Fred Reichheld. Net Promoter Score™ and Net Promoter System™ are service marks of Bain & Company, Inc., and Fred Reichheld.
$307.86 for the plugs + $188.72 labor, the plugs cost $167.94 from Advance (where they were delivered from) which means their mark up was $139.92 unheard of, at the end of the day it cost me $846.39, their mark up for the plugs $51.31 when they actually cost $27.99 minus their 10% ac