Keys and key replacements
 

When you buy a brand new Mercedes, how many keys do you get? 4? 2 Masters or whatever you call them (the ones with the swithblade style retractable key, 1 valet, and 1 that opens all locks but doesn't start the car? How come when most people buy a used MB, they only get 1 main key?

I was told to get new keys I have to take the registration to a MB deal and order them. $140 for the main. Is that about the average price? How much do the other key cost? Can a dealer order the keys for me and get a better price?

Yes, the process is as simple as a stop by the Dealer with your registration.

Your car is probably outfitted with Smart Keys, hence the quoted price of $140. I recently got a set of keys for the 560 from the factory, through the dealer. Walked in with the registration and ordered the keys by the VIN. Cost was $28/key, had the new keys in 3 working days.