Mercedes Benz repair: 1991 Mercedes Benz 500 SL, mercedes benz 500, bmw x5

Question
What is the flat rate time to install the left front window regulator?

Answer
I dont know depends on the mechanic I suppose I did my 190e in about 2 hours anything over that is just simply ridiculous..It all depends on the mechanics apptitude and whatnot..lets just say I put in 4 brakes 2 tensioner pulleys and also a secondary air valve on a 2000 bmw x5 in 6 hours and charged the guy 180 bucks..but i dont believe in overhead and do the stuff outta my garage at home