I replaced mine. I went through the dealership. All the asked was my VIN number. It was close to $200 but, I got a new tumbler and a new key that can open all the doors and trunk. I called a couple of mail order dealerships (which I never did business with) but, they needed a copy of my license, title, etc for security reasons. No go.
I would try to call your dealership, specially if had business with them before, (you are in their computer) and see if they can mail it to you. You know, different business, different rules. I don't think Fastlane can help you with this one...