Good question , You will need to call a lock smith for they vary from state to state , You could also call your local mechanic he may give you a better price than the dealer or lock smith. hope this helps.Changing locks on a Saab 98?
if you do it just pay for the locks... if a garage is doing it then mabey the cost of parts and labor... so i would do it for probabley a couple hundred bucks...