Key/Lock replacement?

You may find a code on the passenger door lock,it would be an "EP" code. Check the trunk cylinder for an "ES" code. Most locksmiths can cut keys from these codes,I know I can. As far as pricing goes it depends on what the locksmith is charging.You may be better off buying new cylinders,remember these locks are 45-47 years old. They are notorius for failing if you have a shallow cut in the key combination, have seen may of them with this problem and the best solution is new cylinders. If you were near me I would fix you up for no charge,but that is not the case,unfortunately. Good luck.