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I have priced new keys from both our local locksmith and Holden, from memory Holden were about $25 to $30 dearer to supply 2 new keyheads and program them. Not sure which way to go yet, the locksmith programs the keys by taking the code from a working old key where as Holden take the codes from the cars computer using tech 2, I am undecided as to whether the Holden way might be better. I don't know whether VX's have a rolling code set up or not, and if the locksmith actually sets it up properly. Both my keys are the originals and still work ok but the buttons are stuffed.