i had a ford, i only had one key which was annoying. i asked fords:- £230
took it to a local key cutting/programming place. he cut me a new key and programmed it in about 10mins. worked a treat.
this was the key with no buttons, which would manually unlock/lock the car and also start it.
the ones with buttons would have been £100.
i would say ask in ure local cutting/programming place and see what they say.