I ordered the new lock tumbler from my local dealer, providing the VIN so my key matches. One week and $75 later I should have it. I forgot to ask if an additional key comes with it. Anyone know the answer to that one? Also, a friend bought one for his 420SEL through a different dealer, and the dealer installed it free in the service drive, (except for $20 to the tech who did it, from my friend). Is is that quick to install a new one? I did not ask for installation charge estimate, but now I wonder if there is one...

Thanks for the advice.
John