That all depends on the locksmith you go to.

1. You have to have the key first. You can find blanks on Ebay https://www.ebay.com/sch/i.html?_fro...e+key&_sacat=0
there is a link.

2. Your going to need the little transponder in the crossfire key fobs good luck with that one.

3. Could pay a crazy amount and just get 2 new keys done, but it's very rare to find a locksmith that can do both make the key and program it for you. So careful you don't want to get ripped off.