I will probably just answer this with a short but sweet answer and then lock the thread because this will get too many people hot.
We techs are professionals...We spend over 50k in tools that many of you will never have. We have a lifetime invested in learning our profession. We also have families we support off of our profession, we have overhead of the shop. The list goes on and on.
If you do your own work. Cool, buy the parts from us, and use our tech advise, but DO NOT ASK WHY WE CHARGE MONEY TO DO SUCH A SIMPLE JOB.!!! THE JOB IS HIGHLY TECHNICAL, HIGHLY COMPETITIVE, AND IT TAKES ALOT TO STAY AHEAD.
ASE CERTIFIED MASTER AUTO TECHNICIAN
MERCEDES SPECIALIST 11 YRS