one price that is shared via PM is a price that they don't want to publicly share.
if they sell below invoice to one person they don't want to be obligated to sell to that same price to others.
-competition has a lot to do with it.
2008 M3 Sedan + catless + Tune
2012 CLS63 AMG
2014 M6 Coupe + catless + KW V3
2015 Porsche GT3