This is an odd little offer, but one that might interest gamers who are dead-set on pre-ordering Evolve. Tesco are currently selling an Xbox One copy for £42.00, which is actually £2 dearer than most, but it also includes a free £10.00 Xbox Live Gift card to spend on whatever you like.
You should know that the Evolve servers will be switched on next Monday, and that the coverage embargo is also set for that morning. As such you're pre-ordering relatively blind, so the smart move might be to wait it out. If you've already made up your mind, though, be sure to thank mambo1888 @ HUKD for the deal!