You can get Burnout: Revenge for the Xbox 360 delivered from The Game Collection for £8.99. To do so, you need to do the following:
1. Add the game to your basket.
2. Use code "STUDENT10%".
3. Go through GOOGLE CHECKOUT, not their own payment system.
You need to go through Google Checkout because, when using this discount code (which is for students but will work for anyone this way), you are required to put in your NUS card number if you go through their own checkout. Using Google Checkout means you don't have to put the code in and this lets you get it for £8.99.
If you do have an NUS number, I don't know if adding this by going through the normal checkout option will give you a further discount or not but if it does, then you might be able to get it for even cheaper than this.
This is one of my favourite games for the 360!