course fees

Hello Scubaboard community, I am looking for the fastest and most efficient path to get my normoxic trimix certification (70 meters), or equivalent to the one offered by FFESSM/CMAS (French Federation of Underwater Sports). I am open to any diving agency (TDI, GUE, IANTD, SSI, PADI, etc.), but...

I'm about to become a PADI Instructor (taking my IE next month) and would like to know if there's a suggested baseline for what to charge students for PADI courses. For example, $399 seems to be typical for a PADI Open Water certification in my area, though it's a wide range from Instructor/shop...