2100 Microsoft Points, Xbox 360 – £13.99
It’s labelled as a Minecraft promotion but they actually just give you an instant 2,100 points code. I have just tried it myself and it works.
Minecraft itself is only 1,600 points on Xbox Live.
Edit: This may no longer be working, will update if we have any more details. Order at your own risk.
Edit2: Appears to still be working as of 12:40.
Edit3: Game seem to be struggling with demand, some users are getting ‘goodwill gesture’ gifts 1200 points. See the comments for more (thank you commenters, we love you)