I contacted local auotlocksmiths when I needed a corsa key.
They reckoned had loads of reliability probs with Ebay ones, and no longer touch them. Ended up going to dealer, at least you will get a warranty, so if it stops working, they can give you another new one
![happy2 :happy2:](https://www.mk5golfgti.co.uk/forum/Smileys/newsmileys/happy2.gif)