I need to buy an extra key in case I lose the one that I have now. If I did lose my key does it make a difference if I have a valet key as opposed to the master key? If it's not any harder/more expensive to make a copy from the valet key if I lose the master one than I'd rather get that if it's cheaper. Also how much are valet keys. I called a local dealership and they said a master key is around $135. I know I can ask the dealer all these questions, but I wanted to ask around before being sucked into something by the dealer. Thanks