Hello
I had someone steal my car key and they got nicked for it...
For a 172 key it is £73.59 including plip and blade and they will reprogram alarm and immobiliser for keys you have and lost key will be wiped...but they could still get in with old key because of the metal blade but not switch off alarm, immobiliser..
For lock change, reprogram and labour it is £410...
Hope this helps.